As Percival turns sixteen, his grandfather tells him about the big world beyond their far-flung home — but the young man seems more interested in dinner.

Percival wakes up to find himself tied up and experimented on. His captor tells him that he's almost perfected the medicine he's been developing.

King Arthur of Camelot makes a grand entrance and offers an enticing promise to the people of Liones. Later, Arthur and Meliodas cross swords.

After a restless night, Percival and his companions receive Meliodas's summons to the audience chamber. He asks if they are ready to part ways.

While in a trance, Percival learns the shocking truth behind his existence. Later, the two factions face off in an intense showdown.