The treasure map

"The Museum Kittens' latest adventure takes them onto a pirate ship in the museum, where Boris thinks he sees the rats with a treasure map. He chases the rats around the museum all day, but to no avail. Just when he's about to give up, he stumbles upon something that just might be a real treasure--but the kittens will need Grandpa Ivan's help to recover it"--Provided by publisher.