While exploring the ruins on Angel Island, a doctor discovers a mysterious newborn bird named Kyoro-chan. They form a bond and decide to travel the world together. Three years later, as the doctor and Kyoro-chan attempt to return to Angel Island, they are shipwrecked by a storm. Kyoro-chan manages to reach the island safely, but the doctor is nowhere to be found. Kyoro-chan prays for his safety and hopes he will return, as he begins his new life on Angel Island.