Ciel receives an invitation from the Trancy household; Claude requests that Ciel and Sebastian come to their private ball. Alois adds how regretful he is for his behavior in the costume ball. Uninterested at first, Sebastian researches the Trancy household. He discovers that they were in fact the ones who killed Ciel's parents, and planned on finishing him as well.
Knowing this, Ciel comes to the private ball to exact his revenge. Upon their arrival, Alois welcomes them and shows them a giant chessboard field where the Trancy household would go up against Sebastian, with Ciel and Alois watching. After lunch, Ciel asks Alois to show him around his mansion. When they enter one of the rooms, Ciel decides to end Alois by having a swordfight.
Ciel lands an attack on Alois and is seriously injured. Claude stops Ciel as he is about to kill him. He goes into a trance when licking Ciel's blood. Alois asks Claude for help but he stares at his master with cold eyes, which could mean that there will be a betrayal in the contract.