When Elizabeth is kidnapped, Meliodas, Ban and Gowther launch an attack on the capital. Meanwhile, King Arthur of Camelot confronts Hendrickson.

Diane has a brush with death while protecting Zeal. Howzer and Guila are forced into a struggle against formidable magical powers.

In order to take Elizabeth back, Meliodas teams up with Arthur to fight a fierce battle against Hendrickson and Gilthunder.

Diane confronts Gowther after he manipulates Guila and Zeal's memories. With the return of the Demon Clan, new threats descend upon allied clans.