Ai felt suspicious when she saw hot wax marking on her boyfriend’s body so she checked his pockets that he wore for his business trip. That’s when she found a business card from a BDSM club that he’s been going and cheating on her. She took a temp-job at the club to catch him in the act. When it was time to meet, the boyfriend has a blindfold and the two start to have perverted sexual play. When the blindfold comes off and finds out that he’s been caught, he apologies profusely but the girlfriend does not forgive him. She then makes him sign a slave contract that he must obey and mold and train him to become the ideal masochist for her.