Ulises, who suffers from a marked psychomotor disorder, is cared for by his brother. One day he leaves the family home and decides to bury himself alive. His brother, desperate, finds him and convinces him to return, but he no longer knows what to do to protect him. One morning, a peddler knocks on the door and they invite him to spend the night at home. The next day Ulises decides to go with him. After traveling for a while, he offers his heart to the vendor.