We can't tell you who we are. Or where we live. It's too risky, and we've got to be careful. Really careful. So we don't trust anyone. Because if they find us. . .well, we just won't let them find us. The thing you should know is that everyone is in real big trouble. Yeah. Even you.
Sometimes your worst problems are the ones you can't actually see. Like the Helmacrons. These less-than-an-inch-high- aliens are back, and they want the morphing cube more than ever. Obviously, Rachel, and the other Animorphs, and Ax can't let them take the cube. But when Rachel tries to stop the Helmacrons from stealing it, Marco gets in the way and ends up with tiny aliens, well, up his nose. Rachel and the others can't let the Helmacrons stay inside Marco's head. They're armed, and they could cause serious damage. So the Animorphs and Ax come up with a plan to evict the Helmacrons from their new residence. But it involves a shrinking ray and the obvious: Marco's nose. . .