While at the beach, Geronimo Stiltonix stumbles upon a mysterious treasure map The spacemice follow it and end up on Aquarix, a Planet that\'s entirely underwater. pirate spacecats Squeak Can the spacemice keep the spacecats from stealing the treasure?. . .
During their exploration, they face fur-eating seaweed, ferocious piranha aliens, and .
While at the beach, Geronimo Stiltonix stumbles upon a mysterious treasure map The spacemice follow it and end up on Aquarix, a Planet that\'s entirely underwater