Optimus Prime is thought to be dead after restoring Cybertron, Bumblebee serves as a Cybertronian police officer, and the genesis has brought forth great prosperity to the new generation of Transformers. All this changes when Optimus Prime turns up to be alive and summons Bumblebee to return to Earth and save it from a new threat. When Bumblebee makes it to our planet, he learns that a maximum security ship has crashed and several hundred Decepticon prisoners have escaped, now posing a real threat to the earthlings. Will Bumblebee be able to lead his team to victory and save our planet? Or will Earth fall into darkness? Bumblebee and his Autobots crew make a comeback in the second season along with other fan favorites, and are stronger and more confident than ever.