Rin and her boyfriend planned a camping trip with their close friends, a couple they both knew well. Lately frustrated by a lack of sex, Rin started drinking alcohol early in the morning to loosen up and approached her boyfriend, but he skillfully avoided her advances. Seeking to relieve her frustration, she turned her attention to her friend's boyfriend, someone she'd secretly been attracted to. She sneaked into the shower room and, watching him stand naked and stunned, pressed her F-cup breasts against his cock and took him from behind, engaging in doggystyle sex. Overwhelmed by the pleasure, Rin continued pursuing him the next day, riding him in the tent and later in a car. Eventually, she began having tight, passionate sex with him right in front of her friend, becoming addicted to the thrill of stealing another woman's man—but what consequences await her in the end?