A group of young adults, consisting of a couple, Chris and Marie, and Marie's two sisters, gather at a lake house during summer break, where a seemingly innocent poker game turns into a series of erotic challenges and consensual power exchanges.
The game, orchestrated by the eldest sister, involves a barter system of favors, where boundaries are negotiated and sexual desires are explored.
The group engages in a series of erotic challenges and sensual kissing, navigating the complexities of jealousy, desire, and sisterly bonds.
The stakes escalate as the game progresses, with clothes being removed and the group exploring their boundaries and desires in the summer moonlight.