Episode Title:Operation: Gus-jitsu.Episode Description:The Spiez investigate a stolen pair of slippers that seems to have ties to ancient ninjas. The Spiez learn another ninja figure is in their hometown, and when they arrive they learn Gus Junior has adopted the skills of the ninja making him an opponent more powerful than they could have ever imagined. In the B-story, a new know-it-all robot, Virtual Virgil, replaces Marc as the homework helper. Marc is out to prove that Virtual Virgil does not know everything.