Each of five children lucky enough to discover an entry ticket into Mr. Willy Wonka's mysterious chocolate factory takes advantage of the situation in his own way.

Panda, Zebra, and Penguin invite the reader to tour a factory where messes, color, and surprises are forbidden but an accident occurs and the reader must help clean it up.

Geronimo Stilton regrets that he is too busy to celebrate Christmas in New Mouse City and wishes he could fly to Santa's toy factory.

It is up to the Thea sisters to investigate when an Ecuadorian chocolate factory known for its environmental practices begins malfunctioning and the owner suspects sabotage.

Uncle Flores is the best tailor in the town of Pinbauê in Brazil. He used to make colourful costumes for the carnival, but nowadays he only makes grey uniforms for the factory workers. The houses are covered with dust from the factory, the river water is murky, and everything is drab. Edinho, his nephew, comes by every day after school to help cut and iron the cloth and listen to his uncle's stories. But when the factory tells Uncle Flores they don't...