There is a world with two towns that are big enemies: Pyross and Hydross.
The show stars two rats, Rapido and Razmo, aboard the S.S. Wanderer, a cheese ship with no actual destination. The focus of the series is on the adventures of the two rats, including guarding the cheese, interacting with other stowaways and various ill-fated encounters with the crew. The rats themselves live in the hull of the ship in a lavish two-bedroom apartment.
The CEO of a company specialized in hybrid chicken production presents its new type of chicken at a cocktail party organized by City Hall, but not everything goes according to plan.
