We learn Ensign Hoshi Sato is a linguistics expert teaching at a Terran University.  She is Japanese-American.  Hoshi has taught herself how to imitate various heretofore inimitable alien speech and vocal patterns and is a brilliant expert on exolinguistics, by which she is both driven and fascinated.  She is recruited as a communications officer (Chief of Communications?) aboard the NX-01 Enterprise by Captain Jonathan Archer, who literally has to browbeat her into going on their mission three weeks earlier than she'd thought.  

She learns Klingon (which has over 80 dialects) within a week, albeit imperfectly, in order to communicate both with Klaang, the Klingon they are returning, and the people on his homeworld.  We learn that she is as fluent as a native speaker in Vulcan.  We also learn that she has an uncanny "ear" and can hear differentiations in the warp drive as well as sense warp signatures in the proximity of the ship in a vague way while sitting at her post in the bridge.  Ensign Sato is one of the first humans, along with Lt. Trinneer and Capt. Archer, to meet Klingons on their home turf, the planet Kronos. 

103: Fight or Flight*
The episode starts with Hoshi contemplating a slug being kept in sickbay, the only alien life form the crew of the Enterprise has found in the entire two weeks of their mission thus far.  The crew is feeling very antsy, experiencing cabin fever, etc. Finally, they find a ship, seemingly abandoned and recently attacked.  The hails of the Enterprise are not being answered.  Captain Archer tells Hoshi she is to be part of the away team to go investigate the alien vessel.  Hoshi then reveals the environmental suits trigger her claustrophobia, and that in the Zero-G tests at the Academy, she merely "bit [her] lip and got through it," but never overcame her fear.  Archer tells her to do so a second time.  (She also reveals that the Universal Translator has triple the lag routed through the comm system.)

The away team gears up. When asked about weapons clearance, Hoshi states she is cleared for EM (electromagnetic?) side arms and Class 3 rifles.  Unfortunately, the alien vessel is full of corpses hanging from hooks.  Hoshi screams "like a 12 year old".  Hoshi displays a great deal of wry sarcasm back on the ship and is also very shaken.  She tells Dr. Phlox she graduated second in her class and studied exolinguistics for three years.  Dr. Phlox suggests she may be happier teaching.  However, when the ship is in peril, Hoshi (tearfully) comes through under pressure and convinces a second ship of the victimized alien race to help fend off the aliens who killed the found crew in the first place.  They make friendly first contact, all thanks to Hoshi's expertise.  Finally, she gets to return the slug to a friendly biosphere.  Adapting, she tells it, will be easy.

104: Strange New World
Coming soon!

105: Unexpected
Coming soon!

106: The Andorian Incident
Coming soon!

107: Terra Nova
Coming soon!

108: Breaking The Ice
Coming soon!

109: Civilization
Coming soon!

110: Fortunate Son
Coming soon!