Six months into their Mouse Watch training, Bernie and Jarvis are getting along like cheese and crackers! Less exciting: having already completed their first successful mission, it’s now back to basic training.

But more pressing matters are at hand (or rather, at paw). The remains of the S.S. Moon, a long-lost spy vessel, have been found. Onboard the ship is a legendary map, and the transmission says that it leads to an energy source that could save-or destroy-the planet. The Mouse Watch must get to it before it falls into the clutches of their nemesis, R.A.T.S!

Bernie and Jarvis suit up-in scuba suits, this time-for a deep-sea mission on a submarine the size of a shark-snack. Their mission brings them whisker to whisker with a giant robotic kraken, nefarious R.A.T.S. agents, the underwater city of Cat-Lantis, and more underwater perils, all in a fight against time to keep a powerful weapon out of the clutches of evil.

Mice in Black meets Mission Im-paw-sible, this high-octane follow-up to The Mouse Watch will appeal to fans of the tiny rodent heroes, as well as draw new readers in with adorable antics and high-stakes adventure.