Three men and a woman, all of them dentists, travel to the Mayan Riviera to assist to a congress. They all are running away of their own history of suffering, spending together a crazy weekend.

Ricardo, a divorced doctor, falls in love with Claudia, and tries to know her by getting close to her brother Julio César, who is also his workmate. But everyone misunderstands him, starting to suspect he's chasing Julio César.