While playing hide and seek, Keroppi and their friends come across dinosaur bones. Guided by the village elder, they dig up more bones, assemble them, and identify the remains as those of a baby dinosaur. A nearby museum displays the skeleton of a mother dinosaur. When night falls, the baby dinosaur's skeleton comes to life, searching for its mother. The group tries to help the baby find its parent, and the baby's cries awaken the mother dinosaur's skeleton. After the two are reunited, their spirits ascend to heaven, leaving their skeletons displayed with care at the museum.