While her husband is away on a business trip, she is raped by her husband's junior colleague with a vibrator, and her masturbation is secretly filmed by her brother-in-law. Her brother-in-law and his friends Arisa this as an excuse to have sex with her, and although she resists at first, she gradually finds herself enjoying it. Then her husband, who is supposed to be away on a business trip, comes in. It was all a trap set up for her husband's unusual sexual preferences.