After receiving a tip-off, compulsive gambler Sergio returns to the betting house trying to recover all the money he has lost , but another gambler bursts into the place with a gun and a gunshot will change his life forever.

Two couples and friends, Ale and Santi and Natalia and Mario, are celebrating their twenty years together by holidaying in the Caribbean. They catch up with each other's news, drink, reconnect... Ale, tipsy on the rum, decides to admit that the night the four met one another, she had played her hand to end up with Santi, who had initially fancied Natalia. The news doesn't get the expected response. The following morning, Ale gets up with a horrible hangover and absolutely no idea of the extent to which she will have to face the consequences of her action.

Mario, an exemplary man, lives in a village on the Galician coast. In the old people’s home, where he works as a nurse, everyone appreciates him. When the best known narco in the area, Antonio Padín, recently released from prison, enters the residence, Mario tries to make Antonio feel at home. Now, Padín's two sons, Kike and Toño, are in charge of the family business. The failure of an operation will put Kike in jail and cause them to owe a large debt to a Colombian supplier. Toño will turn to the nurse to try to convince his father to assume the debt. But Mario has his own plans.

Santos, a failed comic book artist, lives in a parallel universe where he's a superhero who has to save the world.