Aposimz. An artificial planet where its inhabitants struggle for survival on the icy surface. Esrō, whose family was wiped out in an attack by the Ribedoa Empire, sets out to take revenge with his newfound ability as a powerful Norm puppet.

During their journey, Esrō and the Norm puppet Titania are tracked down and captured by the Empire's soldiers. Esrō is forced to fight for his survival in a coliseum. Confronted with new opponents, he unexpectedly finds new allies as well. However, the Empire is determined to stop Esrō and does not hesitate to use his past against him.