On a remote island, a doctor and his assistant work on a secret project to create Dino Zords, creatures of incredible strength and intelligence. When the island is blown to pieces in a furious battle, the assistant discovers that the Dino Zords were created for evil. Barely escaping, the assistant now lives the quiet life of a high school teacher. When he meets three teens, they become an unlikely new team of superheroes called the Power Rangers Dino Thunder... who defend the Earth against this new evil!