Awakened, Unicron abhors Megatron as his servant. Following Unicron's rise, the people of Earth are put at the risk of extinction, but determined to not let it happen, the last descendant of the Primes, Optimus Prime, faces him.Awakened, Unicron abhors Megatron as his servant. Following Unicron's rise, the people of Earth are put at the risk of extinction, but determined to not let it happen, the last descendant of the Primes, Optimus Prime, faces him.