A young woman is violently threatened by her brother, who demands she go to the Velvet Club to earn money to save him from a cartel. When she refuses, he and his associates forcibly drug her with a powerful aphrodisiac. As her consciousness fades, they declare they will sell her to the highest bidder at the club. Elsewhere, a man poisoned with the same lethal drug fights his companion's efforts to take him to the club for a cure, insisting he can control it alone.