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.

On the way to Liones Kingdom, Sin experiences a peculiar dream. The next morning, despite a passerby's warning, the crew stumbles upon a strange village.

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.

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 the other Knights prepare for their imminent departure, Lancelot has a fateful meeting with Guinevere, who has a unique ability.

Guinevere arrives in Camelot just as she's predicted and meets King Arthur. Meanwhile, the Four Knights arrive at their first stop: Wolnack.

As Percival and the rest enjoy the festivities, Tristan is led away by his new roommate. The group splits up to find him, unaware of the looming danger.

Percival's group might have captured their enemy, but they can't agree on the next step. Elsewhere, Isolde, Anne and Jade face a deadly surprise attack.

While grieving their tragic loss, the Four Knights try to enter Camelot with Teaninich's help but soon discover they must find another way forward.

The Four Knights and their companions arrive in the demon realm, where they learn more about Percival's mysterious past, and a touching reunion awaits.

While Gawain battles Mortlach's group, the other Knights learn about the perilous path ahead: the door to Camelot is on the back of a monstrous beast.

In preparation for their upcoming quest, Lancelot puts Percival through harsh swordsmanship training. Meanwhile, Schwarz challenges Tristan to a showdown.

After unleashing a new form of his power, Percival continues training with Lancelot. Later, hitchhikers threaten the Knights' quest to find the Behemoth.