Román Maldonado (Ricardo Darín) has been born and bred in "Luna de Avellaneda," a social club situated in Avellaneda, Buenos Aires.

The club used to have over 8,000 members, but currently has little over 300. The place is decaying and the gatherings are hardly what they used to be. To top things off, Román discovers his wife is having an affair, and their marriage finds itself at its worst.

Together with Amadeo Grimberg (Eduardo Blanco) and Graciela (Mercedes Morán), friends from the club, he must fight fight for the survival of the place before it is bought and a casino is built in its place.

The film chronicles the ups and downs of this fight, as well as Amadeo's struggling relationship with Cristina (Valeria Bertuccelli) and Román's family crisis. In the end, the motion to keep the club standing is outvoted 33 to 26, and the main characters find themselves parting ways in a bittersweet manner. The ending is however upbeat, as Román finds hope in finding his old club credential, and together with Amadeo hints that they will start a new one.