In the throes of Mardi Gras, Ava and Venice, best friends and stepsisters, share a forbidden desire for their stepbrothers, Elias and Nick. As they don masks and join a wild family foursome, they explore their deepest fantasies, exchanging passionate oral caresses, and surrendering to the taboo allure of familial group sex, their bodies entwined in a dance of lust and taboo.