The Seven Deadly Sins are a band of knights in the land of Britannia who had disbanded ten years earlier after being framed for plotting a coup of the Liones Kingdom, the Holy Knights who sequestered them before taking control in the wake of a rebellion they organized. Liones' third princess, Elizabeth Liones, finds the Seven Deadly Sins' leader-Meliodas, before they search out his comrades so they can clear their names and liberate Liones from the Holy Knights, who were manipulated by a demon named Fraudrin into unsealing the Demon Race from their prison.