Four-year-old Robert has a favorite place in the whole city, but he does not call it the public library. To him, it is simply Mike's House. That is because his absolute favorite book, Mike Mulligan and His Steam Shovel, lives right there on the shelves. He loves visiting his friend Mike every single week. But one snowy morning, Robert gets separated from his mother on the busy city streets. When a friendly police officer stops to help him find his way, Robert knows exactly where he wants to go. The only problem is that the officer has never heard of anyone named Mike who lives in a giant building filled with books. Now, Robert must help the confused policeman figure out the clues to find the library. It is a funny and heartwarming city adventure that perfectly captures the magic of finding your favorite story.