In a secret game of taboo, two sisters, both virgins, sneak into their brother's room, eyes locked on the bulge in his pants. They tentatively touch, caress, and lick his throbbing cock, their inexperience making their moves clumsy yet all the more erotic. The brother, torn between familial duty and primal urge, watches as they take turns riding his shaft, their tight pussies struggling to accommodate his size, their faces a mix of pleasure and pain as they lose their innocence in a tangled, forbidden dance.