Roa is a fictionalized account, based on real facts, about Juan Roa Sierra, the supposed killer of Jorge Eliecer Gaitán, Colombian politician and lawyer, dissident candidate of the Liberal Party for the 1950 Presidential elections, which he had a very high probability of winning.

Adel is a singer from the Caribbean coast who wanders through the villages playing his accordion and falling in love with girls. He meets Blanca who gives him her love, he agrees to marry her and go to live with her in Barranquilla. Despite the promise, and the pressure of Blanca's family, it will be very difficult for Adel to fulfill his commitment: the same night of the wedding day he will be seduced and will be obsessed by La Mohana, goddess of the waters, about whose legend the old people tell more than one story.

Amparo, a mysterious woman, offers a large payment to quickly cremate a young woman named Lucia. When the funeral home owners refuse, they later discover the body has vanished and, in panic, give Amparo another person’s ashes instead. She pays and leaves, unaware that this mistake will lead the undertakers into the worst trouble of their lives.

A gang of professional thieves plans how to rob the jewelry store in Bogotá and escape, not imagining that death surrounds them and all because of a red light.