Barcelona, the late 60s. Eugenio Jofra, a young jeweler, meets Conchita on a regular bus. The attraction is instantaneous, and they both begin the love story of their lives.

Eugenio learns to play the guitar to accompany Conchita, for which he will have to fight against stage fright. Thus begins the musical career of the two. When Conchita must be away from Barcelona for two weeks, she convinces Eugenio to carry out the proceedings alone. When she returns, Eugenio has become a phenomenon of the city's underground humor.