This magical horse dose not need to be a unicorn to manipulate the things in this world. Mr. Smile is a horse with a grudge against a robot named Charmy for cursing him to this state, now he serches the planes of existance forever trying to find him and obliterate him. Sadly he cannot find the bot so he destroys worlds to force his own law, just like when he was in his previous form, and hope the destruction will draw Charmy back to him.
Little dose he know, Charmy hasn't been the same since their last battle...