Barcelona, early twentieth century. While a trio of masked burglars and their minions search for an ancient Moorish treasure that can only be located when the two parts of an ornamental chain are connected, Inspector Hernández and his faithful assistant Carlos follow the dreadful crime path they walk by. (Only the German cut of the three original Spanish episodes has survived.)

Folletinescas adventure series, adapted from the novel "Barcelona and its mysteries" of Antoni Altadill. Is divided into 8 sessions: 1. Barcelona and its mysteries 2. The smuggler boat 3. The legacy of six million 4. The Counterfeiters 5. Shine 6. The will of a dying 7. The return of an inmate in August. Death of Diego Rocafort.

Based on Meller's first screen appearance, "Los Arlequines de Seda y Oro", where two brothers are separated and reunited as adults, he a famed torero (bullfighter) she a singer raised by gypsies. This is a reduced version centered on her character.