Yu Xintong and Gu Yuxuan loved each other for five years before breaking up, and Gu Yuxuan suddenly disappeared. One day, Yu Xintong dreams of a place called "Rabbit Island," where she finds that Gu Yuxuan has turned into a talking rabbit and is trapped in this world. Yu Xintong is determined to help him solve the puzzles of the island, only to discover that each house represents a childhood shadow that haunts Gu Yuxuan. She helps him find his confidence, and in return, he helps her confront the trauma from her grandmother’s actions. Their love is rekindled as they wake from the dream.