The brothers sleep the night in the factory, unaware the mouse has survived and followed them. Witnessing their sorry state, the mouse takes pity on the brothers and decides to help them out. The mouse does this by activating the factory's machinery and dropping a large slice of cheese from a wheel into the wax-fiber boiler, producing a ball of string cheese, which the brothers discover. Inspired, the brothers end their war with the mouse and renovate the factory, retrofitting the entire factory to facilitate the manufacturing of cheese-based products. Lars runs the factory and entered a relationship with Hilde, Ernie took the position of his chef, and the mouse as their quality control taste-tester for new cheese combinations.