Luis Madero is a young professor of History at a prestigious high school. It is essentially phobic. Until Camila arrives and introduces herself as the assistant of Don Federico Madero, her grandfather. Luis does not want to know anything with that man who leaves him to look for him. Camila notices Luis of the death of Don Federico and the delivery of his unique inheritance; an old cane. From this moment strange things begin to happen in Luis's life; Someone is watching, they are following him and both will begin a path that puts them in the writings of Mariano Moreno, in the footsteps of the Secretary.