Young orphan Marcelino (Pablito Calvo) lives in a monastery, where he remains guileless, if mischievous. One day after sneaking into the attic, which has always been to forbidden him, he finds a life-size crucifix. Frightened at first, he then believes the figure on the cross is alive and suffering, and brings it food. The figure speaks and thanks the child. When Marcelino brings food again later, the voice tells him that he can have anything he wishes -- and Marcelino asks to see his mother.