A ragtag group of Autobots find themselves in possession of a powerful artifact, stranded on an alien planet and attacked by all manner of Decepticons, including the successor of Megatron!!! 

SYNOPSIS:

Ultra Magnus finds himself in the unfamiliar position of commanding a crew of explorers, consisting of the easy-going veteran Heavy Load, the overconfident speedster Moonracer, the child-like minicon Sureshock, and the guilt-ridden flyer Silverbolt. Whilst on a mission, they discover the long-lost Key to Vector Sigma, which holds incredible power and grants access to the ancient supercomputer at the core of their home planet. After escaping a Decepticon attack, the group find themselves on the strange world of Earth. With no way of calling for help, the group must learn to work together and keep the Key safe from those who seek its power, including someone who was once close to Silverbolt.