The world is overrun with monsters called Nemeses-and a young boy infected by one will stop at nothing to defeat them all!Evil creatures called Nemeses fall from the skies and the only ones who can fight them are Wizards-infected ones who survived a Nemesis's corruption. Seth, one of these survivors, vows not only to fight the Nemeses, but to find their mythical nest, Radiant, and destroy it!After getting hit by a giant dragon's head an enduring a couple of other setbacks, Seth's team in the Broom Broom Survival Cup finds itself in a difficult position. While clearly not in his element, Seth comes up with some ingenious tactics that result in a surprising, one-of-a-kind finish! After the race, Seth and his friends confront an emergency that forces a rethink about frienships and alliances forged in the past.

Spurred by this, Seth and the others head out to lands unknown to them and stumble into a situation promising more amazing adventures!