Arc 2

is the 2nd arc of Yūki Tabata's Black Clover.

The arc revolves around the exploration of a newly emerged dungeon at the border of the kingdom.

Entering the Dungeon
Asta, Noelle, and Rack Boltia enter a dungeon that a villager happened to discover. While exploring, Asta and Noelle argue about what the anti-bird's name should be, but the bird doesn't like their names and attacks Asta. Rack then suggests a name, which the bird accepts.

Accepting the Mission
A few hours earlier, Yami tells everyone about a discovered dungeon. Asta asks what a dungeon is, after which Magna, Rack, and Vanessa tell him what a dungeon is. Yami reveals the location of the dungeon and how they have to work quickly. Asta volunteers, which Yami approves, as the Magic Emperor requested Asta for the mission. When Asta and the other leave, Vanessa asks whether they will be alright. Yami says that this mission will help them grow and that Rack is with them, commenting on how Rack has excellent sensory magic and would have been chosen by the other squads had his personality not been an issue.

Inside the Dungeon
At the dungeon, Noelle chides Asta for his having dropped the lantern and for his stepping on her. Rack finds a hidden door, and they enter a room that is being sustained by mana. Noelle and Rack talk about the mana in the room, about which Asta is confused since Asta cannot feel mana.

Activating the Traps
Asta starts to complain but accidentally activates a trap. He quickly pulls out his sword and destroys the trap, but Rack activates more traps and says that how much fun it is, shocking Asta and Noelle. Rack comments about how amazing Asta's sword is, how it probably is the reason Asta was given the mission, and that Rack would like to fight him in two or three years. Rack, however, senses other people and rushes off, leaving Asta and Noelle alone. Noelle is angry about it but is quickly caught by a high level plant trap. Asta frees her, but he then finds himself caught and cannot free himself. Asta, however, is saved by someone using wind magic.

Golden Dawn Arrives
Back at the base, Yami remarks that some members of the Golden Dawn will also be there. At the dungeon, Asta looks at his savior, who turns out to be Yuno and is with two other member of Golden Dawn. Yuno mentions that he has repaid his debt, and both are glad to see each other. At the Golden Dawn's base Alecdra Sandler asks his captain why he sent Yuno, which William reassures Alecdra to trust and thinks about how he can use Yuno as a pawn. At the dungeon Kluas Lunette questions why Yuno saved Asta and Noelle, which Asta just question who Klaus is. Mimosa Vermillion recognizes Noelle and chant with her, which angers Noelle. Mimosa then says that they earned a star from the Magic Emperor, which Asta says that they earned one too but Klaus doesn't believe him. Klaus then asks about their third member, which they don't tell him that Rack left them to track down some unknown enemies. Klaus then insult the black bulls captain, which cause him and Asta to get into an argument about the each others captains. Klaus then tells Mimosa to reveal their location, which Mimosa uses her magic to create a miniature model of the dungeon. Yuno then creates a ship with his magic and carries his squad into the dungeon. Asta then thinks about how its a challenge with Yuno and head further into the dungeon. Noelle asks what they are going to do, which Nero flies to a ledge and points to a hallway. At Yuno location Klaus insults Asta's squad, which Yuno tells him to not to underestimate Asta. Klaus then thinks about how he still hasn't approves of Yuno.

The Enemy Kingdom
At the capital a messenger informs the magic emperor that the Black Bulls and the Golden Dawn have sent member to the dungeon. He also informs that the Diamond Kingdom have sent a group known as Hell Lotus to the dungeon. The magic emperor then says that he has meet them and that they use interesting magic. The other then says that its not a time to relax, which the Magic Emperor the kids for the magic knights are strong. In the dungeon Rack has reach the enemy and taking most of the out. Rack then calls them weak and looks over at another guy and says that he isn't. The guy then thanks Rack for the compliment, and says that the infinite power of youth is really frightening.