Galicia. Land of Legends. The Envoys arrive at Porto da Lua to investigate an alleged miracle. But they find a divided town where nobody wants them to succeed in their mission.

A coincidence casts doubt on Quintana. A witness reveals new information about Valentina’s healing. The discovery of a body has similarities with of Salinas’ strange childhood.

The night that the three Nuns lost their sight is the key. To find out what happened, those who are silent must speak: the three Sisters, the girl who saw the attack against Nuno and Cañola.

Nuno is now the main suspect in Bustamante's murder. His life is in danger. At night, during the town's festivities, the Envoys are the only ones who can save him. If they arrive in time.

Pilar is cleared of suspicion, the Brotherhood believe Nuno to be the culprit. First, they must stop Pilar from taking over the fishing industry. Alba is honest with her daughter. A bad idea.

The investigation comes to an unexpected conclusion. The Envoys link Quintana to some healings inside the hospice.

The public learns who Xiana's true father is. Bernat's rage threatens the town. Meanwhile, the Envoys understand that the cause of everything is in a past they ignore. Nuno is the key.

Antequera discovers Quintana’s painful past with Adriana and Esteban. Salinas puts Benavent to the test. Antequera and Emilia come up up with a risky plan and Salinas discovers a new talent.

The Vatican forcers the Envoys to take different paths. Salinas witnesses a particular ritual. Antequera fights to remain in the investigation when he receives a surprising message.

Local authorities investigate the recent murders. The Vatican puts pressure on the Envoys when they broaden the scope of their investigation, putting their stay in Mexico at risk.