Tristan and Salvador, two best friends, go on vacation to Mar del Plata. Salvador decides to go his own way, and Tristan has to work as a waiter in a hotel to make ends meet.

To sing and dance on their birthday, a girl has kidnapped the manager of the youth group Tremendo. Tremendo was a prefabricated pop band, created in Argentina to compete with Menudo, that Puerto Rican group that had Riky Martin in its ranks.

The Campanelli family messes up in Mar del Plata.