Knuckle Up is the 2nd 3 Ninjas movie. It is an enjoyable movie as the original cast all stayed. It was filmed somewhere in California, here's the main casting info.
By the way, that pic is false, none of the real actors are on the cover. Don't ask.

Rocky - Michael Treanor
Colt - Max Elliott Slade
TumTum - Chad Power
Granpa Mora - Victor Wong
Jo - Crystal Lightning

Picture Summary I'm sorry I'm not able to display more interesting pix from the movie. I was gonna use my webcam but I don't have patience to move my computer close enough to the TV. But this gives you a pretty good idea of the movie!

It starts as Rocky, Tum and Colt are in a car with granpa, driving down the road. During the ride, they witness Native Americans protesting and yelling " NO MORE DUMPING" as the land was killing the people. The bad dude though, said he didn't care and this was his land.

At the cabin. The 3 Ninjas wakes up and faces a morning test with granpa, Rocky and Colt responded to the test of the stick by grabbing it while Tum, carrying a cereal box and a carton of milk said there was NO  FOOD in the refrigerator granpa!

The 3 boys are chanting 'PIZZA! PIZZA!' as they head to the pizz place. A girl name Jo is asking these dudes what they did with her father. They kind of harrased her. The 3 Ninjas comes to rescue as they started fighting the guys. Totally whipping them with their awesome Ninja skills!

Rocky sees his brothers fighting. Tried to stop them. A guy with a knife comes up and Rocky says "I'll handle this". He handled him and said " You shouldn't play with Knives man, it's a bad example". They bad guys afraid to get hurt more, left.

They became heros as people asked them questions. Granpa came and said it's time to GO!

Granpa saids they need to pay for any damange at the pizza parlor and made them stare at flowers. Granpa saids they are getting cocky. Granpa: "listen , you are helping others so you can become heros, that's not helping them, that's helping yourselves. It's a lie." Points to a flower "now this is the correct path to a true Ninja. Hear the flower blooming, only then can you become a true Ninja..."

SCENE FIVE, the ninjas clean the pizza parlor place. They meet Jo, the girl they 'saved' and she told them about the story of how her father's missing and how her people were dying. The boys said they'd help Jo to find her father.

so they started the journey and hitched on to a trunk which belongs to JJ, the bad guy at the pizza parlor. They arrive at a garbage dump and follows JJ.

They listened to the mayor's conversation and find out about Jo's father and how he has the disk that will ruin the whole thing about how the Mayor is polluting the land. They also saw Jo's father.

Course they can't get out without a fight. So they fought the bad guys at the garbage dump and returns to Jo. Who was estatic that they found her father and plant a kiss(two kisses on colt) on the guys. The plan is they get Jo's father out that night.

They made weapons for the occasion and snuck out when it's dark. Meeting jo who allowed them to use for war paint to paint their faces.

They arrived at the garbage dump. Successfully rescued Jo's father. Almost losing the disk and their lives but put up an awesome fight.

They were invited to this Native America celebration. They danced and were named heros. Later bad guys came again and the Ninjas and others creamed them, AGAIN. Trial day that states whether the land was hurting people or not is tomorrow.

The next day, the 3 boys rode their bike to Jo's so they could go to the trial. Colt asks Rocky if he likes Jo(rock said she's okay) , and said it's good if he didn't because it CAN distract a ninja's concentration. He wasn't looking as his bike tripped on something and he fell. TumTum said, "guess it can distract your concentration"

Jo asks if they were okay and then Colt starts flirting with her. Rocky sighs then talks to a lady about the flowers...Then they get into cars and heads for the trail. But bikers JJ and the bad guy hired stopped them and Jo was kidnapped for blackmailing Jo's dad so he wouldn't give the disk out.

The 3 Guys decides to rescue Jo. Rocky drove lousy but they arrived at this place where they had Jo. They fought all these bad guys. Lotsa funny stuff including more dancing and action.

And of course, they rescued Jo. They race to Court. Jo's dad gave the real disk. There will be no more polluting and the bad guys are punished. A happy ending! Oh, the 3 Ninjas are heros.

Oh, and they find out all about what flowers say when they bloom and stuff...I just spoiled the whole movie for you! Not, they movie is so much funnier, interestier(??) than this lil' summary so go rent it now. Or buy it at Amazon.com