An uninvited guest at a wedding brings intriguing news to Hache, who spots an opportunity. A robbery casts a shadow on Vinuesa's newfound happiness.

Hache is given just one week to get her lab running. The surprise arrival of a relative adds to her stress, but Ventura provides an escape from it.

Laforet pays a visit to see the lab and offers Hache a deal. Mateo tries to woo Mirta, who makes a demand. Camino confesses a secret to her husband.

Vinuesa eagerly investigates the incident at the club. Arístides tries to smooth things over with Pío. Hache runs into Celeste in an unexpected place.

A sudden loss brings Luciano to Barcelona to investigate. Camino's nerves threaten to betray her to the police. Silvia reaches her limit with Vinuesa.