The community of Ravèt (Cockroaches) has kidnapped Koukouy (Firefly) in order to conceal her light and stop her from preventing them to roam freely throughout the land. They venture in the dark and they prefer the dark.

But Gèp (Black Wasp) and Krikèt (Criquet), Koukouy two little sisters, set out to look for her. After a long period of time, on the way, Gèp found Koukouy's light, and then finally where the Ravèt are holding her. Gèp decides to go save her by herself, although not knowing if she'll succeed nor what lies ahead.