START-246 A fully monitored resort guesthouse where she worked part-time was a guesthouse where the manager had set up hidden cameras. The target was a timid, tall female college student, Ayase Ten.

A group of three female college students work part-time at a seaside guesthouse! They're going on vacation and making fun memories! ...Or so they thought. In fact, the inn is full of surveillance cameras. The manager has seen everything, including slacking off, stealing food, and other misdeeds. Ayase, who is shy and quiet, becomes the target of blackmail. In order to protect her two friends, she is used behind the scenes to satisfy the sexual desires of a perverted old man during her summer vacation.