Asta struggles to find out how to become the Wizard King. When he goes to ask Julius, he finds Yuno already there asking the same question. The two boys renew their vow to become the Wizard King.

Asta and Yuno wander the Royal Capital in search of merits, while Magna and Luck chase after Sekke and are turned into robots.

Asta and Yuno search for the person who turned Magna and Luck into robots, meanwhile Charmy makes and sells mille crêpes. Sally sneaks up on Charmy and turns her into a robot.

Sally buys drinks for Finral and Vanessa. Asta and Yuno later find the pair have also been turned into robots.

Yuno decides to use Asta as bait to trap the culprit. Gauche goes to visit his sister, and Sally pretends to be Marie and tricks him into becoming a robot.

Noelle is flustered when she sees Asta dressed as a present. Sally poses as a fortuneteller and tricks Noelle into becoming a robot. Grey also happens to be turned into a robot.

Yuno vents his frustration over not being able to talk much and then accuses Yami of turning the Black Bulls into robots. Sally reveals herself to be the culprit and makes the robots join together to form a Black Bull mecha. She has also awoken the giant demon skeleton to attack the Royal Capital.

Sally reveals that her plan was to dissect Asta and turn him into a robot. Asta is convinced to combine with the mecha and defends the Royal Capital from the demon.