Optimus Prime finding his home planet, Cybertron, now a dead planet, which he comes to find he was responsible for killing. He finds a way to bring the planet back to life, but in order to do so he needs to find an artifact, and that artifact is on Earth.

Fourth part of the Transformers series, which starts a new main characters changing history.

After a spectacular crash-landing on an uncharted planet, brash astronaut Leo Davidson (Mark Wahlberg) finds himself trapped in a savage world where talking apes dominate the human race. Desperate to find a way home, Leo must evade the invincible gorilla army led by Ruthless General Thade (Tim Roth) and his most trusted warrior, Attar (Michael Clarke Duncan).