Cancelled Movies. Wiki

Dino-Riders is based upon a little-known Mattel/Tyco toy property from the late 80s with John Stevenson as the director. The premise focuses on the Valorians, a future race of humans who are at war with the frog-like, humanoid Rulons. To escape the assault on their home, they use their ‘Space Time Energy Projector’ (S.T.E.P) machine to do so, but in the process they (and the Rulons following them) end up on Prehistoric Earth.

Using their AMP necklaces, the Valorians are able to telepathically communicate with the Dinosaurs and befriend them. Thus, the Dino-Riders are born.