G.I. Joe vs. the Transformers 2

When Cobra Commander tries to use hyper-advanced Cybertronian teleportation technology for his terrorist activities, a malfunction of epic proportions occurs. The super computer that controls the teleportation gate scatters several Transformers into the time stream, marooning them at various points in Earth's history. If the time-tossed robots are not rescued, temporal feedback will unleash a firestorm that will rage throughout history, utterly destroying the planet. Meanwhile, on Cybertron, the evil Shockwave plots the ascension of the Decepticons!

Only by allying with Cobra and the mysterious Transformers can G.I. Joe avert a disaster that could consume two worlds...