Pipi, a firefly with curled wings who cannot fly, spends his days being bullied by the violent Shou and the selfish Mimi. However, after a certain incident, he becomes friends with the other fireflies. "I wasn't alone..." Pippi rejoices. However, their joy is short-lived as they are suddenly struck by a violent storm. Pipi and her friends set out in search of a safe place to live. What will become of them...?