Set in the 1920s, this is the story of four women from different backgrounds newly hired as operators for a phone company.
Genre: Drama
Cast:Blanca Suárez , Yon González , Ana Fernández , Nadia de Santiago , Ana Polvorosa , Nico Romero , Kyla Garcia , Martiño Rivas , Concha Velasco , Grant George , Maggie Civantos , Ãngela Cremonte , Borja Luna , Antonio Velázquez , Kiti Mánver , Sergio Mur , Iria del RÃo , Tina Sáinz
Six months later, a catastrophic event deeply affects Lidia, Marga, Carlota, Ángeles and their loved ones. Marga gets a surprise visit from an in-law.
With her friends' help, Lidia puts her plan into action. Carlota decides what to do with her inheritance. Ángeles tries to earn Pedro Guzmán's trust.
Lidia's desperation worries Carlos and spurs Francisco to offer support. Marga helps Julio cover Pablo's job. Carlota finds a way to promote her cause.
Lidia and Francisco investigate Miriam's origins, leading them to a convent that is also an orphanage. Pablo decides to return to work, which complicates things for Julio and Marga.
Guzmán begins to suspect Ángeles of being a mole. Carlos finds out about Lidia's role in Doña Carmen's accident. Marga has a horrible realisation about Julio.
To protect her child, Ángeles accepts a deal with Guzmán. A phone call gives Lidia a hunch on Eva's whereabouts. Carlota responds to her attackers.
Lidia turns the tables on her captor. During the king's visit, those fighting for Carlota's cause take drastic measures, forcing her to choose sides.
As the situation escalates, Lidia tries to get to Eva, Marga shocks Pablo, Carlota takes a risk, Ángeles learns a truth and Francisco attempts a rescue.