Madrid, Spain, December 27, 1870. General Juan Prim i Prats, president of the Council of Ministers and Minister of War gets involved in a treacherous ambush, is mortal injured and dies three days later. A mystery, a conspiracy, a murder that was never solved.
Jon is a troubled teenager who has been expelled from school. His mother decides to teach him a lesson by sending him away with his grandfather Max, a retired military man who lives in a village by the seaside. But the time they will spend together won’t be that simple, Jon likes to flirt with danger and bad companies, and the veteran has now settled down into a comfortable life.
Elena has ordered dinner at home, but when she opens the door, she discovers that the delivery man is Manu, the one who was her great love and whom she has not seen for too many years.
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.
