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.

On a journey to find his estranged father, Percival comes across a group of traveling performers who give him a lift to the nearest village.

Although Percival puts up a good fight, the black knight hasn't unleashed his full powers yet. Suddenly, a mysterious red fox appears.

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.

To return his grandfather to his original form, Nasiens will have to defeat another Holy Knight, and Percival is determined to help.

Percival and his friends come across a fierce young woman named Anne who, against her father's will, dreams of becoming a Holy Knight.

Although Ironside completely overpowers them, Percival, Anne and Nasiens put up a brave fight. But Donny is nowhere to be seen.

While Percival and crew struggle to destroy the Coffin of Eternal Darkness, a powerful mysterious ally faces the monsters raiding the town.

The group — now joined by an exuberant Anne — make a stop in the rough town of Cant, where Donny has an awkward family reunion.

While held captive, Howzer, Nasiens and the others find out that Edlin has stolen a dragon's egg, putting the whole town in danger.

As Percival, Donny and Anne have their hands full trying to stop the rampaging dragon, the still drunk Howzer asks Nasiens to sober him up.

Percival faces off against Kellie, a powerful and merciless mythical beast. The crew chases Ardbeg into a mysterious cave, only to find out it's a trap.

Ardbeg's magic transforms Percival and his crew into helpless babies. The elder of the demon clan village comes to their rescue, presenting an ultimatum.

Arthur's men, hiding in the distance, ambush Gowther and Ardbeg. Restored to their original forms, Percival and his crew continue their perilous journey.

Percival and his crew go head-to-head with the Dark Talismans. However, Fiddick devises a plan to defeat the young crew's source of strength.

Arriving at Liones Kingdom, Percival and his crew head to the castle to meet the king. But they find him absent, and soon Percival strays into trouble.

The former king has an ominous dream about the Four Knights. Percival and his crew are introduced to Tristan and set off in search of the fourth knight.

A mysterious girl appears before Lancelot, delivering a prophecy. Meanwhile, a hostile drunkard provokes a fight with a Ruby Holy Knight.

The Four Knights of Apocalypse finally gather together in one place. However, they can't agree on how to handle Pellegarde — until Percival steps in.

Under Arthur's orders, powerful members of the demon clan wreak havoc in the kingdom. Meliodas seeks to uncover the truth behind King Arthur's motives.

The Four Knights collaborate to combat the servants of Chaos. Meanwhile, sensing imminent danger, Lancelot makes his way to the castle.

With Lancelot missing, Galland and Melascula resurrect by fusing together. Outmatched, Percival, Tristan and Gawain need all the help they can get.

Drawing strength from the people's hope, Percival faces Mela-Galland, who proves to be too powerful. Tristan takes a dangerous risk to counterattack.