Chieri is a sixth-grade elementary school student living alone with her mother after losing her father at a young age. Her only companion is a talking stuffed doll named Cherry, which she discovered in a storeroom during her father's funeral. In Chieri's imagination, Cherry comes to life—playing with her, offering advice, and providing comfort as a stand-in for her late father. One day, Chieri visits her grandmother's home for a memorial service honoring her father. There, she comes across a stray dog that is about to give birth. Suddenly, a crow and a strange monster appear, threatening the newborn puppies. Can Chieri and Cherry manage to protect the puppies from this danger?