: Optimus Prime returns to Cybertron and is brainwashed by the sorceress Quintessa into becoming " Nemesis Prime ." He is sent to Earth to retrieve Merlin’s staff to drain Earth's energy to revive Cybertron.
: After a battle at Stonehenge and on Cybertron's remains, Viviane retrieves the staff, saving Earth. Optimus and the Autobots return to Cybertron to rebuild their home. Key Characters REVIEW OF TRANSFORMERS: THE LAST KNIGHT - People of Con
: The story reveals that Transformers have lived on Earth for centuries, aiding King Arthur and Merlin during the Dark Ages.