Sendai, a puppet made by the ancient of darkness and his best friend Knox dream of being able to escape the empty dimension they are stuck in, being controlled by their tyrannical creator, but the creator hears them talking about it and to punish them for even thinking about the outside world, kills Knox right in front of sendai in the hopes it would make him give up this idea but in retaliation sendai snaps at this and fights his way out to avenge knox and get out of this hell hes trapped in