In Madrid, teenager Lulu has a crush on Pablo, who is the best friend of her brother Marcelo. One day, they go together to a concert and Lulu loses her virginity to Pablo. However, he travels to the United States and Lulu misses him. When he returns, they meet each other and Pablo proposes to Lulu Soon they befriend Ely and play sexual games with her. Later they have a daughter, Ines. One day, after a party, Pablo blindfolds Lulu and proposes a threesome; when Lulu discovers that she had an incestuous relation with Marcelo, she leaves Pablo to live with Ines in an apartment. Lulu feels bored and soon she is addicted in kinky and bizarre sex with gays in the underground of Madrid. Her erotic journey descends to hell when she meets the dangerous Remy that invites her to the world of sadomasochism.