Tatsuya's computer is hacked. He starts investigating the identity of the attackers and suspects that it has to do with the upcoming Thesis Competition. First High students sense that they are being watched. Will they be able to find out what is going on?

During the preparations for the Thesis Competition, a girl is seen carrying a wireless password breaker. Erika offers to teach Leo a move that would be lethal against his enemies. Since they are taking the day off together, rumors start flying about them!