El río del Bosque Azul se ha secado. ¡Hay que solucionarlo! Bitmax y sus amigos descubren a los responsables del desastre: ¡los castores! No será fácil negociar con ellos. Y Evo, como siempre, ¡lo complica todo!All of a sudden, the Blue Forest river dries up. Little by little, the inhabitants of the Blue Forest despair. They need to know what has happened and fix it. After all sorts of hypotheses and searches, they find it: some beavers have altered the course of the river because they have built a dam with logs. It won't be easy to get them to undo it. And what's more, Evo, as always, complicates things!

¡Los habitantes del Bosque Azul se unen una vez más para devolver el agua al curso del río!