Guanajuato, 1900. Fermín suffers from a serious illness that attempts to kill him. As a result of an experience that changes the way he appreciates his life, he will do anything to avoid dying.
A family gathers and sells waste. One day, the mother finds a cylinder in an abandoned hospital and takes it home. The family situation becomes worse when, without them realizing it, the cylinder begins to change them from within.
