101-102 Broken Bow (2 hour pilot) 
Mission date: April 16, 2151
The story is said to open with a young Jonathan Archer building a model starship with his father (who builds the SS Enterprise his son will command in later years). Following the credits, the story jumps to present day with a Klingon who crashed on Earth being chased through an Oklahoma cornfield by the Suliban, the recurring villians of the series, a deadly nomadic race obsessed with genetic enhancment... which has led to speculation of being an offshoot of Khan's people. Each Suliban will be different depending on what feature they have had enhanced. They are said to all have chameleon-like properties able to change their skin color to blend in with their surroundings.) Archer is ordered to return the Klingon to his homeworld of Qo'nos despite objections of Earth's new allies, the Vulcans, who have been supervising Earth's exploration of the galaxy after first contact.
Archer and a hastily pulled together crew including an alien doctor, a Japanese multi-lingual comm officer, and a Vulcan science officer/supervisor head off in the SS Enterprise to do so - the first ship capable of Warp Five (100 times faster than any other human ship). Not far into the mission the Suliban, lead by a creature named 'Silik' who himself is taking orders from an unknown power in another time, attacks and kidnaps the Klingon - forcing the crew to find where they've taken him and why do they so desperately want him back in their clutches. Along the way they'll visit an exotic alien underground marketplace, fly through the liquid atmosphere of a gas giant, and learn space can be a very dangerous place.
Quotations: (The Enterprise is under attack. Archer and Sato are trying to talk, but the Klingon is shouting in Klingon, annoying them both.) Archer: "Do you wanna tell him to shut up?" Sato: "Shut up!"
103 Fight or Flight 
Mission date: May 6, 2151
The Enterprise encounters a derelict ship floating in space. The crew of the ship is found suspended from hooks, with all fluids being drained from their body. It turns out that they have been killed by another alien race that is trying to extract "tri-globulin" from their bodies.
When Archer realises that the alien race who did this may return, Phlox points out that the human body produces a similar substance - an ominous implication. After what were described as some good, very tense scenes between Archer and T'Pol, the Vulcan first officer manages to convince him that there is nothing to be done. Of course, eventually the aliens do return, meaning Hoshi Sato has to find a way to communicate with them to avoid the destruction of the Enterprise. 'Fight or Flight' was described as a good, somewhat creepy episode.
104 Strange New World 
Mission date: Unknown
This is the episode in which the crew encounter what they believe to be a friendly, uninhabited alien world, but that turns out to be far more dangerous than they ever expected. The crew members that visit the planet are infected by an alien pollen that induces hallucinations and paranoia.
This episode will again feature some of the tension between T'Pol and the rest of the crew, as she is suspected of being in secret contact with the hostile aliens on the planet. 'Strange New World' will also showcase the unreliability of the early transporters, as a crewman is beamed back with debris embedded in his body.
105 Unexpected 
Mission date: Unknown
This apparently "very funny" episode will feature the male pregnancy first mentioned by Rick Berman in the recent TV Guide interview. 'Unexpected' opens when malfunctions start to occur on the Enterprise, and the crew notice an alien ship hiding in their exhaust wake. It turns out that the aliens are there to recharge their ship to try and get home. The Enterprise engineer, Charlie 'Trip' Tucker, goes over to the aliens to help them repair their ship - but unwittingly becomes pregnant in the process!
Trip manages to fix the ship, and it departs. Once the crew figure out that Trip is indeed pregnant, they try to track down the aliens, and find them hiding in the slipstream of a Klingon ship. The Klingons are not at all receptive to Captain Archer and threaten to destroy both the alien ship and the Enterprise. For a change, T'Pol helps Archer resolve the situation, and the Klingons agree to leave the aliens unharmed - if they agree to trade some primitive holo-technology.
Quotations:Dr. Phlox to Trip: "I'm not sure if congratulations are in order, but you're pregnant."
106 Terra Nova 
Mission date: Unknown
When the crew alters course to explore a deserted Earth colony called Terra Nova, they come face to face with the colony's human descendents who have evolved in a surprising manner. This will probably be the first episode Levar Burton directs.
107 The Andorian Incident 
Mission date: Unknown
A militant faction of Andorians attack a Vulcan meditation Monastery because they believe that the Vulcan's are hiding a long range sensor array there to spy on the Andorians. Enterprise is in the general vicinity and decides to drop in for a visit at a most inopportune time. Directed by Roxann Dawson ("Voyager") and guest starring Jeffrey Coombs ("DS9") as Shran.
I don't remember their exact words, but this was the first time in Star Trek history that we heard a captain ask his first officer to come to bed with him. (Not counting the time Janeway and Chakotay spent stranded on the planet with the hottub that Chakotay made...)
108 Breaking the Ice 
Mission date: Unknown
Trip discovers that T'Pol is transmitting secret messages to a Vulcan ship, which has been tailing Enterprise for weeks; Capt. Archer must rescue two crewman from a crumbling comet.
109 Civilization 
Mission date: July 31, 2151
The Enterprise discovers a planet with a technological level comparable to that of late-19th century Earth. The crew decide they want to study this planet's culture, and an away team has its appearance altered to resemble the alien population and blend in easily. But after they are on the planet, they are drawn into a deadly mystery that has already cost the lives of several locals. Archer enjoys a flirtation with a female alien.
110 Fortunate Son 
Mission date: Unknown
The Enterprise encounters an Earth cargo ship. When the cargo vessel is attacked, its middle-aged commander, Captain Keene, is seriously wounded. The ship's command is then assumed by its first officer, Ryan Cross, a man around 30 years of age who has spent his entire life on cargo ships. Tension arises in the Enterprise's interaction with the cargo ship, as the hostile Cross distrusts Archer and his crew. Levar Burton may direct this episode.
111 Cold Front
Mission date: Unknown
(Said to feature the return of the Suliban leader Silik and his mysterious commander from the future.) Unlike during their first encounter, Silik actually helps Archer, preventing the destruction of the Enterprise for unknown reasons. It also turns out that an Enterprise crew member is actually from the future, sent back to the 22nd Century to stop Silik and find out who is giving the Suliban orders.
112 Silent Enemy 
Mission date: Sept. 1, 2151
An unknown ship trails the Enterprise, not responding to any attempts to communicate. Completely outclassed, Archer orders the Enterprise to return to Jupiter to install the cannons that Starfleet was unable to install because of the ship's swift departure to Qo'noS. But even as the ship rushed back to Jupiter, Tucker and Reed work overtime to try and install the weapons themselves and get some kind of defense against the alien ship, which is continuing its stealth attacks.
113 Dear Doctor 
Mission date: Unknown
Rumoured to feature the Enterprise encountering the planet Valakis, containing a pre-warp civilisation inhabited by two alien races. The planet suffers from an unknown disease that is killing the population, and Captain Archer quickly agrees to help find a cure. But when the aliens also ask for the secret of warp technology he is not so sure, and finally begins to realise the Vulcans may also have been right in not giving humans warp technology. Also rumoured to feature a romance for Dr. Phlox with Ensign Cutler (the female ensign in the episode Strange New World).
114 Sleeping Dogs 
Mission date: Unknown
When Enterprise comes across a wounded Klingon vessel, T'Pol, Hoshi, and Reed take a shuttle pod down to investigate. There they are ambushed by a hostile female Klingon who hijacks the shuttle pod, leaving the Enterprise crewmembers dangerously stranded on the Klingon vessel. Now it is up to Archer to take the Klingon under guard and enlist her help in rescuing his crew.
115 Shadows of P'Jem 
Mission date: Unknown
Archer and the crew are disappointed to discover that T'Pol has been ordered by the Vulcan High Command to leave the Enterprise - and equally frustrated at her seeming indifference to leaving their ranks. T'Pol's last mission as a Starfleet officer, however, proves eventful when she and Archer are kidnapped by a militant faction on an alien planet and find themselves once again at the mercy of the volatile Andorians.
116 Shuttlepod One 
Mission date: Nov. 9, 2151
Rumoured to feature Tucker and Reed stranded in a shuttlepod when they return from a mission - only to find Enterprise apparently destroyed. Also said to focus heavily on Reed's character.
117 Fusion 
Mission date: Unknown
Rumoured to involve a group of renegade Vulcan civilians, who have rejected logic and set out to explore other ways of life. T'Pol struggles with these Vulcans and their new ways of thinking.
118 Rogue Planet 
Mission date: Unknown
Rumoured to feature the Enterprise crew encountering a hunting species known as the Eska. They possess advanced camouflage equipment that they use to hunt game - so advanced that even the crew's nightvision sensors can't detect them. Whilst on the planet, Archer comes across a mysterious shape-shifting woman who claims her species are being hunted by the Eska - for they are what the Eska prize most.
119 Acquisition 
Mission date: Unknown
When the Ferengi, a groupt of intergalactic theives, stun the Enterprise crew and try to rob the ship, it's up to Trip [clad only in his standard-issue blue boxers] to work covertly to stop them. After the Ferengi awaken Archer to force his assistance in pillaging the ship, Trip secretly reveals to Archer that he has inadvertantly escaped the effects of the noxious gas and they work together to try to surreptitiously thwart the robbery and save the crew. Jeffrey Combs, who played Weyoun (all of them), Brunt, Tiron and Mulkahey on Deep Space Nine, Penk on Voyager and Shran (the Andorian) on two other episodes of Enterprise guest stars, this time as Krem, and Ethan Phillips (aka Neelix) guest stars as Ulis.
120 Oasis 
Mission date: Unknown
While exploring a crashed vessel on a desolate planet, the Enterprise crew is haunted by some ghostly figures. They also encounter an alien race that has survived despite insurmountable odds. When Trip helps repair their derelict vessel he is befriended by Liana, an attractive humanoid alien who develops feelings for him. Tom Bergeron ("Hollywood Squares") guest stars as D’Marr and Rene Auberjonois ("Star Trek: Deep Space Nine") guest stars as Ezral.
121 Detained 
Mission date: Unknown
While exploring a planet, Archer and Mayweather enter a "military zone" and are detained in an internment prison by an alien race called Tandarans, who are at war with the Sulibans. While the Enterprise crew’s previous encounters with the Suliban have been disastrous, Archer and Mayweather find themselves sharing a cell with some Suliban detainees who they believe may be wrongly imprisoned. Dean Stockwell (Bakula’s co-star in the hit sci-fi series "Quantum Leap") guest stars as Colonel Grat, an alien Tandaran military commander who clashes with Bakula’s Captain Archer.
122 Vox Sola 
Mission date: Unknown
A strange, symbiotic alien creature boards the Enterprise capturing a few of the crew members, including Archer and Trip, and cocoons them in its web feeding off their bodies to survive. With the captured crewmembers’ lives in jeopardy, Hoshi, under T’Pol’s command, faces her biggest challenge by trying to find a way to communicate with the life form in order to return it to its home planet. Roxann Dawson ("Star Trek: Voyager") directed the episode.
123 Fallen Hero 
Mission date: Feb. 9, 2152
When a Vulcan ambassador is accused of secretive criminal misconduct, Enterprise is asked to transport her back to the Vulcans. However, when they are attacked by a corrupt alien race, T’Pol defends the Ambassador and, for the first time, asks Archer for his help. Fionnula Flanagan ("James Joyce’s Women") makes a guest appearance as V’Lar.
124 Desert Crossing 
Mission date: Feb. 12, 2152
When Archer and Trip are invited to a desert-like planet by an alien leader after they help fix his ship, they discover he is a terrorist who has lured them onto his planet under false pretenses. Meanwhile, T’Pol, who is left in command, faces a tough decision when she cannot locate Archer and Trip in the desert. Clancy Brown ("Highlander," "Starship Troopers") guest stars as Zobral.
125 Two Days and Two Nights 
Mission date: Feb. 18, 2152
The crew experiences unexpected adventures when they take shore leave to the famous pleasure planet Risa, where Archer has a mysterious encounter with an alien woman, Hoshi has a surprising romantic rendezvous, Mayweather has a rock climbing accident, and Trip and Reed go clubbing only to end the evening as unwitting victims of a robbery. Meanwhile, Phlox stays on board the Enterprise with T’Pol to take his annual 48-hour hibernation and exhibits some uncharacteristic oddities when they have to wake him up after an injured crew member returns from shore leave. Michael Dorn (Lt. Commander Worf of "Star Trek: The Next Generation") directed the episode.
126 Shockwave, Pt. I 
Mission date: Unknown
Starfleet orders Enterprise to return home when the crew seemingly causes the destruction of an alien planet they were exploring. Archer is visited by former crew member Daniels, who travels through time to warn him that the Suliban are trying to sabotage Enterprise’s mission. Archer and Daniels then travel through time together to try and thwart the Suliban’s plans.