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!