In a world where the legendary Holy Knights have faded into myth, a new generation of heroes rises to confront an ancient, apocalyptic threat. This sequel series to The Seven Deadly Sins follows Percival, a kind-hearted but naive boy living a secluded life with his grandfather on a remote island. His world is shattered when a mysterious and powerful knight arrives, seeking his life and revealing a dark prophecy: Percival is one of the Four Knights of the Apocalypse, destined to either destroy or save the world. Forced to flee his home, he embarks on a quest to find the other three chosen knights, encountering a vibrant cast of allies and enemies along the way. With stunning animation and a blend of epic fantasy action and heartfelt camaraderie, the series explores themes of destiny, friendship, and the courage to forge one's own path. As dark forces gather and the fate of Britannia hangs in the balance, Percival and his companions must unlock their hidden powers to prevent a catastrophic end.