A huge behemoth is rampaging through the forest on its way towards the capital, and only Ernesti can stop it. He "borrows" a Silhouette Knight from one of the other students and goes off to face it, but he's so tiny his feet can't even reach the pedals!

The new mechs are to be sent to Fort Casadeus, where the powerful Marquis Dixgard will take personal command over them. But on the way, a group of raiders lure demon beasts into attacking the convoy, hoping to steal them for their own.

The powerful Jarodek empire is attacking the Occident countries in an attempt to unify their side of the mountains. When things get out of hand, it's a perfect opportunity for Ernie to try out his new mech!