Carmen, Merche and Paula are three young singers living in the same pension. Every night are forced to dodge men arriving from Madrid in search of adventure. They are assisted by Don Narciso, a fellow board that has solutions for everything. What I really want is to get married and all three have found a boyfriend, but every couple has their problems.
After the death of Queen Mercedes, Alfonso XII's first wife, the problem of the succession is raised. The monarchy needs a heir and the King choses María Cristina from Habsburd to be the futur spanish queen. But Mercedes memories will be against the marriage and the long-awaited son will born when Alfonso is already dead.