Gravure idol Azumi Harusaki is surprised at a photoshoot when the editor-in-chief from her publishing company shows up with his son, Shota. The editor-in-chief comes to observe, while Shota, driven by curiosity, barges into Azumi's dressing room and starts pulling bold pranks. Pretending to listen to her troubles, he begins massaging her shoulders, then moves on to her big breasts, gradually escalating his actions. He lures her into an oil massage under the guise of relaxation, then shamelessly invites her to the bath. His prank spirals out of control, becoming increasingly daring until it completely runs wild.