In Spain in the 1930s, a strange disease spread among children. Children infected with this disease had no sweat glands, no tears, and no pain. To prevent further harm, the authorities isolated the sick children and locked them in a monastery, completely depriving them of their freedom. The boy Benigno (Ilias Stothart) imprisoned in a small room was attracted by the singing next door. He became good friends with the girl Ines (Liah O'Prey) through the small hole he dug. This group of poor children must learn "pain" in a unique way. In contemporary Spain, doctor David (Àlex Brendemühl) had a serious car accident while driving. His wife Anas (Irene Montalà) died, but the 6-month-old child in her belly survived. David, who temporarily escaped the gate of hell, later learned that he had fatal lymphoma and his life would end at an unknown time. In order to get a bone marrow transplant, David had to turn to his elderly parents for help, but learned a long-hidden secret...