David’s dream is to be part of Los Billis, the gang of cool teens in his neighborhood. However, when David thinks he has a chance to join the group, he ends up becoming their victim.

David goes to a Billis party for the first time. But the party gets out of control when a conflict arises against Los Bárbaros, Los Billis’ declared enemies.

To prove his loyalty to the gang, el Indio asks David to sell marijuana at the school he goes to. Anxious about getting caught and expelled, David tries a joint for the first time and Andrea helps him go through the bad trip.

David is finally a member of Los Billis, and he receives an invite from Mariana, the school’s coolest girl, to her birthday party. Persuaded by Leo, David thinks that this might be his chance to have sex for the first time.