The plot revolves around the return of the fearsome Demon Clan, led by the enigmatic and powerful Demon King. This new threat poses a grave danger to the peaceful coexistence of humans, fairies, and other magical beings.
The story begins with the reawakening of a mysterious curse known as the “Curse of Light.” This curse starts to spread across the land, affecting not only humans but also the Seven Deadly Sins themselves. Meliodas, the leader of the Seven Deadly Sins, finds himself at the epicenter of this malevolent curse. As the curse intensifies, it threatens to consume Meliodas, transforming him into a dangerous being.
Elizabeth, the princess of Liones and Meliodas’ love interest, stands steadfastly by his side, determined to find a way to save him. She embarks on a perilous journey, seeking answers from ancient legends and forgotten realms in a desperate attempt to break the curse. Along the way, she reunites with the other members of the Seven Deadly Sins: Diane, Ban, King, Gowther, Merlin, and Escanor, who each struggle with their own personal battles against the curse.
As the anime unfolds, the Seven Deadly Sins encounter powerful adversaries and face daunting trials. They must confront their own inner demons while combating external threats. Their bond as a group is tested, and they discover that overcoming the Curse of Light requires not only physical strength but also unwavering trust and emotional resilience.
Meanwhile, the Demon King’s forces gather strength and unleash chaos upon Britannia. The heroes find themselves entangled in a deadly conflict, fighting against hordes of demons and other formidable foes. The fate of the world hangs in the balance as they strive to save Meliodas and put an end to the Curse of Light.