Power Rangers Dino Thunder

Power Rangers Dino Thunder is a 2004 American television series that aired on the Disney/Jetix television network. It is the twelfth incarnation of the Power Rangers television series, based on the Super Sentai series Bakuryū Sentai Abaranger (Blast-Dragon Squadron Rampage Ranger).

The Missing Bone (Season 1, Episode 17)
While the gang is on a field trip to the local museum, Kira, the Yellow Ranger (Emma Lahana) investigates a storeroom and is hypnotized by a dinosaur skull. The skull orders her to blow off her friends, sneak into the Dino Ranger base, and steal a bone that the dinosaur needs to reform himself.

Part 1
Kira meets a cute guy who introduces himself as Blake and invites her to watch him race. Lothor frees himself and casts a spell on the Ninja Storm Wind Rangers to make them evil and to help him imprison the students at their school. Cam is horrified when he realizes what happened and calls up a few old friends. Conner, Ethan, and Kira are stunned at the thought of fighting other Rangers and find themselves evenly matched.

Part 2
Cam hatches a plan to help Shane, Dustin, and Tori, but it won't be easy. Hunter and Blake reluctantly assist him and are almost overwhelmed. The Rangers must team up to take on Mesogog's and Lothor's armies when they unite against them.