Finn is back on High Card's duty with Chris, who is now Finn's junior. Lindsey tells Finn about the story of how he ended up in the orphanage, and while Finn and Chris are on a hunt to collect a card, Finn encounters the Black Knight from his nightmare.

Finn and Chris go to Silphium to collect the Heart of Queen with Sonic Move, the ability to move at sonic speed. The target wears a superhero costume and uses his ability to help people. Finn gets lost and asks a stranger in a robe for directions. Meanwhile, Chris notices abnormalities with his body.

Chris gives half of his life to Michel with X-Hand and gets her illness in exchange. His power of Calorie's High is now weakened. Leo gets summoned by Theodore to the HQ to discuss it. Concerned, Finn secretly follows. And a new assassin from the Klondike Family shows up, causing a panic at the HQ.

After the incident at the Pinochle HQ, High Card is suspended indefinitely despite the royal family’s effort to cover it up. With Theodore still missing and Chris hospitalized, the team is separated. That’s when Norman shows up and starts talking about how he, Theodore, and Ban met.

Leo returns to Rummy College, a prestigious boarding school, as High Card is on hiatus. He is tired of everyone tiptoeing around him, but a transfer student named Francois approaches Leo. Initially Leo is distant, but they become close over time. Incidentally, Leo starts to get sick.

Chelsea visits Wendy with a girl named Chloe, who's trying to get away from the police because of her card. But Wendy is not sure if she's the right person to help. But Chelsea drags her out anyway, and the three girls are on the road to run.

After catching all the high cards in one fell swoop, Inspector Young begins negotiations with the royal family. He tells them that the police will take control of the cards from now on, and proposes that in exchange for returning the cards recovered from Klondike, they be told everything the royal family has been hiding. The king is reluctant, but he has no choice in the situation. Meanwhile, Sugar is trying to reveal the abilities of the captured Burst and extract internal information about Klondike. Zenon and Tilt arrive to recapture the cards.

In front of Finn stands the famous sorcerer from the fairy tales, Lala Val Den Klein . He tells Finn about the truth behind the cards, San Galgano's goal, and the joker. Then Lala asks Finn to kill him to end the misfortune created by the cards.

Due to Owen's intervention in an attempt to kill everyone in the Klondike, Zenon and Tilt are trapped in the Red Labyrinth in a near-death state. Burning with revenge for Theodore, he also attempts to kill Burst, but Finn and the others rescue her and subdue Owen. Meanwhile, inside the Red Labyrinth, Zenon revives Tilt's hidden memories as a gift for the afterlife. Realizing what has happened to him, Tilt gives in to his rage and transforms into San Galgano, staining his sword with blood.

Finn and his friends infiltrate the ruins where Van is hiding to rescue Theodore, but are instead captured. Van explains the reason for his break with Theodore, and then overpowers Tilt, who has barged in. He then uses Round and Round to inflict the same pain on Leo as he did on him. Theodore is forced to watch his son's face contorted in pain. If things continue like this, Leo's life will be in danger. Theodore, who has maintained a ruthless attitude for the sake of the royal family and pinochle, makes a decision...

After being swallowed by San Galgano, Finn dreams of his childhood. He remembers only fragments of it, but it's a dream that leads to the tragedy. Meanwhile, Leo and the others, accompanied by Theodore, urge the King to cancel the coronation ceremony. However, the royal family refuses to listen. Chris hears from Burst that Finn is still alive, and drives off. Sugar, who wants to avenge Young, joins them, and Chris and the others rush to Finn's side. There, a shocking truth about Tilt is revealed.

San Galgano heads to the Trapra Palace where the coronation ceremony is taking place, intending to slay the Joker. When two powerful forces clash, the palace will not be spared. Wendy fights at the gates to stop San Galgano. Leo and Vijay take advantage of the opportunity to evacuate the citizens and attendees of the royal capital. Finn and Chris run to the basement of the palace to rescue the king, who is carrying out a ceremony to seal the cards. Will the high cards be able to prevent the tragedy caused by the cards?!