Yohei and Sayaka are secretly dating within the company. Sayaka wants to be able to fully indulge in their private time, but Yohei remains cool and unflappable both at work and at home. One day, Sayaka is blamed for the loss of an important document and is harshly reprimanded. However, it turns out to be a misunderstanding on Yohei's part. Angry, Sayaka tries to get back at Yohei by causing him trouble...?!
