Somewhere at the very end of the world, where real fireworks fly out of volcanoes, Live small volcanos Krato and Flambia. These two are just as inseparable as fire and smoke, like a rocket and an engine. But their families, who live in volcanoes on opposite banks of the river, are fierce enemies. But children don't care about adult arguments, because true friendship knows no barriers. And when one day they discover that the bridge over the river is gone, Krato and Flambia don't even think to give up. Volcanos are sure that you can get out of any mess, the main thing is to give in to gas!