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.

At the end of the summer of 1992, three 15-year-old girls, Sandra, Eva and Malena disappear without a trace from a nightclub in a coastal town. When the police investigation appears to be taking the wrong direction, Javi, Sandra’s younger brother, takes the matter into his own hands. Along with the help of his friends, they discover something not of this world.

Many prisoners convicted of rape, murder and terrorism are released before serving their full sentences. Hours later, one of them is killed. Detectives Mora and Nieto take on the case.

A man is found brutally murdered, presumably by his son Marcos, a teenager with no apparent problems. The tragedy hits the school, with students and teachers wondering what went wrong.

Toni, once a famous singer, now has gambling debts and struggles to make ends meet. His luck changes when Malena, a former lover, introduces him to Junior, a wealthy young man, ready to hire him to steal a priceless painting from his own mother. To carry out this supposedly easy heist, Toni recruits a clumsy crew, forming a team in which each one pursues their own interests.