"Did you really think you were done? No." There's a new threat for the Lab Rats. Ximni, a bionic robot, is dead set on killing them. Why is she doing this? Who, really, is Ximni? And, most important of all-will she succeed? [Rated T-She. Plays. Dirty. Remember to comment and let me know how you feel.]

The universe is a pack of mysteries. One of them being this planet. After the planet is discovered, the Lab Rats are sent to explore it. But of course, they had no way of knowing what really ruled the planet of Terraria.