Two men have a toxic relationship. Nil feels undervalued by Max, who is in charge of the relationship. During a dinner with their parents, the couple announces that they want to have a child. They realize that they have very conflicting opinions about fatherhood. They start a strong argument that makes them distance themselves even more, at the same time that they must redefine their future.
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.
