In a world where heroism is a punishment, Xylo Forbartz, a condemned goddess killer, battles endless hordes of monstrous abominations as part of Penal Hero Unit 9004. Death is no escape, only a cycle of resurrection and relentless combat. But when Xylo encounters a mysterious new goddess, their unlikely alliance sparks a rebellion that could shatter the chains of eternal punishment.

In the near future, a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) called Sword Art Online has been released where players control their avatars with their bodies using a piece of technology called Nerve Gear. One day, players discover they cannot log out, as the game creator is holding them captive unless they reach the 100th floor of the game's tower and defeat the final boss. However, if they die in the game, they die in real life. Their struggle for survival starts now...