Transformers: Broken Mirror

When the heroic Decepticon Treadshot falls into a parallel universe, he befriends Grace Allen, a human, but soon their relationship is threatened when both the heroic and evil Autobots arrive and turn their world upside down. In a world that is not his own, Treadshot is pushed to his limits to discover a traitor in the Autobots' midst and to protect the person he cares for most