In a small and impoverished Spanish village, an orphan boy named Marcelino lives in a convent with a group of friars. Despite the rigidity of the place and the lack of maternal love, Marcelino is a curious and vibrant child who longs to know the world and find the warmth of a family he never had. His innocence and goodness shine brightly for everyone around him, but his life takes an unexpected turn when he discovers a mysterious and beautiful crucifix in the convent's attic.
The relationship he establishes with the figure of Christ becomes the center of his existence; Marcelino begins to converse with the crucifix, sharing his dreams and desires, even his fears. As his connection deepens, the boy performs acts of kindness and generosity that impact the friars and the villagers, transforming the convent into a kinder and brighter place. However, Marcelino's happiness is threatened by the conflict between faith and the desire to belong.
The film becomes a moving tale about faith, loneliness, and the search for love, where the purity of the child challenges the norms of his surroundings and shows us the true essence of human goodness. Through his journey, Marcelino invites us to rediscover the magic of innocence and the importance of the bonds that unite us.