The Sun in My Heart, directed by Taisuke Oyama, follows the story of a young boy whose family moves away from Tokyo to the countryside to live with his grandmother. While adjusting to this new environment, the boy struggles with the new Christian school, particularly the act of praying, which leaves him confused. One day, in the middle of prayer, he unexpectedly sees a small figure of Jesus appear before him. Will he begin to believe in God and miracles?