Eri is an office lady working for an adult goods manufacturer. She serves tea at a meeting about prototypes. While her boss and the development team are out of the room, she secretly masturbates with one of the prototypes. "What is this? It feels too good!" Just as she's about to climax, her boss catches her, and feeling guilty about masturbating at work, she can't resist and is subjected to his torment... She also volunteers to be a tester for a new product and plays with her boyfriend using a couple's toy!