Six years ago, after the animals of Torch City were defeated by the invading robot army during the war of resistance, a former resistance soldier, "Rabbit Rayton," survived. Forced to imprison a friend, he had no choice but to raise his giant metal fists and fight against his oppressors. However, he did not know that he would soon be swept into a whirlwind of conspiracies involving the legion, the resistance, and the rat gang.