To definitively break the curses that poison their existence, Meliodas and his faithful companions confront the King of Demons himself, who is trying to possess the bodies of his sons in order to reign over the material world. In a cataclysmic clash that mobilizes the full combined might of the Seven Deadly Sins and their allies, the Demon King is finally struck down and destroyed for good. The curses are lifted, peace is restored to Britannia, and the Seven Deadly Sins can finally turn the page from a long era of suffering to peaceful days.