Seville, Spain. Juan Santos, a convicted petty criminal, gets out of jail for a day to celebrate with Triana, his wife, the first communion of their daughter Estrella.
Two hours with a stranger. A bittersweet love story. A daily reality that feeds on censored fantasies. Lack of communication. A pact. And finally a flower, the lie that always join them.
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.