The Autobots embark on a quest to locate mystical artifacts to save their homeworld of Cybertron from being sucked into a black hole. But the Decepticons want to get their hands on those artifacts too.
The Autobots divide into teams and journeys to the depths of Giant Planet. However, they face a difficult battle against an attack from a strange underground structure and Decepticon.
S1E42 21 min