Garbiñe Insausti

Bilbao, Basque Country, 2001: a ruthless terrorist attack shatters the family of police officer Carlos Martínez. Barcelona, 2013: Carlos leaves Mariusz, a Polish immigrant, in charge of his daughter and, offering vague excuses, returns to the Basque Country and rents a house in Lekeitio, a small village by the sea.

A soldier from the 15th century, a university student from the 19th century and a nurse from the present join the secret 'Department of Time', a secret department within the Spanish government with the ability to travel through time. Their mission is prevent changes in history.