during the decpticons attack on autobot city,optimus landed in Autobot city with Hound,Sunstreaker and the Dinobots "Megatron must be stopped,no matter the cost." He'd say before transforming into his truck mode and driving off. After a while he'd arrive to the battle and run over some Decpticons before transforming mid air and firing on the cons. He'd soon be face with Megatron. Sadly Optimus would loose the battle and is now on his knees as Megatron aims his fusion cannon on him