"Deep in the Pacific Ocean, a colossal army of sea monsters is rising up to attack the world. With giant squid laying siege to coastal cities and global sea defenses in tatters, there are only three creatures left to keep humanity afloat: the yetis of the Mythical 9th Division"--P.  of cover.
Captain Mousebeard is a feared mousehunting pirate. He seeks out the rarest and most precious breeds of mice to collect and trade. Emeline, a mousekeeper, wants the bounty her master puts on Mousebeard's head. So she heads off to adventure to capture the pirate.