Kaho Imai, a tanned, big-titted gyaru, belongs to a legendary black gyaru circle. Her boyfriend, invited by her, steps into the circle but stands out—he doesn't use tanning salons and can't keep up with the wild vibe. The circle's leader, Natsuya, takes notice and deliberately gets him drunk beyond recovery. As the intoxicated boyfriend collapses, the male members of the circle shift their behavior entirely. While he lies helpless, Kaho starts hooking up with flashy, sleazy guys, taking creampie after creampie. In the end, her loyalty to her boyfriend was already long gone.