In Transformers The Last Knight movie; Optimus Prime finding Cybertron but now it is a dead planet. 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.

Starring: Mark Wahlberg, Josh Duhamel, Laura Haddock, Jerrod Carmichael, Isabela Moner, Peter Cullen, Sir Anthony Hopkins
Director: Michael Bay
Writers: Art Marcum, Matt Holloway
Genre: Action, Adventure, Sci-Fi
Published By: Paramount Pictures
Official Site: transformersmovie.com