Mateo lives with his mother Libertad in a rose-tinted world: a microcosm that has precisely two inhabitants, mother and son. One day Mateo is diagnosed with cancer.

In August 2019, five friends disappeared while walking the Camino de Santiago. Their trail was lost in the Irati Forest, very close to the border with France. Two weeks after their disappearance, the police found their mobile phones buried in the middle of the mountain, along with their backpacks and various personal belongings. Thanks to the recordings of the devices, it will be possible to see what happened to these five young people.

On a sunny day five young people travel in a striking red car. After hours of travel, they are in front of a large gate that opens up offering them the way through a leafy and strange forest. A luxurious and somewhat neglected environment in which your most desired fantasies are about to occur.

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.