Andrew, his cousin Judy, and a tiny robot are shrunk by a shrinking machine and are trapped in the bathroom with Mrs. Scuttle, and her dog, Harley, who is getting a bath. They have a short time which they have to make it back to the shrinking machine by or it will blow up and they'll be shrunk forever. They get separated in the bathtub and Andrew chews his umbubble gum which will make a bubble to be inside and keep him safe. His robot, Thudd, got wet and isn't feeling so well, but is able to spot Judy on a sponge. An ant is coming after her and they need to save her, so they go over and get her in the umbubble. They go through many adventures such as almost going down the drain, getting pushed around in their umbubble, getting stuck in a spiders web, getting stuck on the shower curtain with fungus, landing next to Harley's poop, and getting flushed down the toilet! ( )

I like the part when they get flushed in the toilet he he he. ( )

This book is about Andrew getting lost in the bathroom. It was a little boring because there were no silly parts. There was one part that I liked, when they didn't know how fungus could harm them and turn them into juice. I also learned that bacterium lives in slime cities.