Ratnip goes sailing through the city streets after a rainstorm in the seventh book of the chapter book series from the author of Good Dog. It's raining, it's pouring, and the city rat is...sailing! But a little rain won't stop Ratnip from treasure hunting around the City. Ratnip builds himself a pizza pirate ship and takes to the soggy streets on an adventure--meeting some unexpected underwater creatures along the way. With easy-to-read language and illustrations on almost every page, Ratnip chapter books are perfect for emerging readers.