Who can you trust?

In the city of Xalapa, twenty-year-old Pedro helps Julio (his best friend), get Paulina ( his other best friend) drunk, so he can later rape her in her sleep. After witnessing the act, he regrets it and confronts Julio. Who asks him to keep it to himself, because it would end the already shaky friendship between the three; Despite this, Pedro confesses to Paulina knowing that it will be the last time they speak.