"When twelve-year-old Josh Primm and his family move to New York City and into the house on East 88th Street, they are surprised to find a crocodile living in their attic. But Lyle isn't just any crocodile-he's playful and friendly, and he can sing! Josh and Lyle quickly become the best of friends, and after that nothing is quite the same! All too soon Lyle's former owner, Hector P. Valenti, self-proclaimed star of the state and screen, returns to claim his crocodile for a new musical act. To make matters worse, gentle Lyle runs afoul of their most unwelcoming neighbor, Mr. Grumps. Josh and his parents soon realize what it would mean to say goodbye to the extraordinary Lyle. He changed their lives forever, and the Primms must fight to keep him as part of their family.