Transformers: Dark of the Moon
When Optimus Prime learns that the humans have concealed the discovery of a Cybertronian ship on the moon he and Ratchet investigate. They recover Sentinel Prime, who Optimus returns to life using the Matrix of the Leadership. After Sentinel Prime insists the Earth expel the Autobots the Wreckers prepare the Autobot ship Xantium for flight. The Autobots escape in the first booster stage and return to Earth before Starscream destroys the ship. Optimus kills Megatron and Sentinel at the end of the film, but has his arm chopped off by Sentinel when fighting him. Plot In 1961, a Cybertronian spacecraft crash lands on the far side of the moon. Known as the Ark , it was the last ship to escape a Cybertron devastated by war. Piloted by Sentinel Prime, it carried "the Pillars", technology that could save the Cybertronians once and for all. On Earth, the crash of the Ark is detected by NASA, and President John F. Kennedy authorizes the mission to put a man on the moon as a