Evelino Galindo, the serious owner of a porcelain store, argues with the womanizer jeweler Orcajo for an insignificant game of dominoes. Evelino, enraged, challenges him the next day to a duel in the gym. But after meditating a bit he starts to get scared. That is why, with the help of his friend Leoncio, he sharpens his wit to find a way to escape from combat. However, the situation is becoming more complicated.

Durante una partida de dominó, Evelino Galindo, propietario de una tienda de porcelanas, mantiene con un compañero de juego una agria discusión que casi desemboca en tragedia, ya que reta a muerte a su adversario. Cuando se da cuenta del error que ha cometido, intenta escurrir el bulto por todos los medios posibles.