Kana and her husband join their neighborhood association for a camping retreat, but his demanding job has left their marriage strained and distant. A group of lecherous older men notices and targets her, cornering her in a closed tent for stolen sex. Though her husband is separated from them by only a thin sheet of fabric, their seasoned technique makes her climax repeatedly. Emboldened by her weak resistance, they coax her into giving blowjobs and then pass her around in cramped-tent gang sex. The thrill of travel and the guilt of cheating steadily cloud the frustrated wife’s judgment.