Paloma's son Diego plays with a dildo, convinced that it is a unicorn horn. Paloma wonders how the dildo managed to get to Diego's birthday party.

Paloma receives an anonymous message the night before the school camp with a photo of the dildo and a text that says her husband loves it. When she tries to get rid of it, she receives a second message that proves the sender is in the camp.

Paloma tries to find out if her husband is truly cheating on her and with whom. Soledad Navarro, the extrovert wife of Waldo Toro Ayala, the best striker of the Mexican football team, is the number one suspect.

After Paloma discovers that Soledad is not Fede's lover, Soledad helps Paloma find out who he is cheating on her with. However, they realise that Vicky, a single mother who meets all the requirements, is not Fede's lover either.

Paloma, Soledad, and Vicky discover that Majo, Paloma's high school friend, is too close with Fede. They think that either she is the one or she knows something.

After discovering that Fede's lover is their children's teacher, the four friends decide to go on a night out to drown their sorrows.