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Cukinko the Hamster's Bureau accepts orders for various inventions: an ice machine for a colourful ice rink, air transport, a cheese-melting cauldron, a singing water park, a lift subway... The inventions of Tsukinko and his assistants, the inventors Glek and Doremirk, as well as the wit and mutual assistance of the inventive engineers, are useful to the inhabitants of the City of Hamsters.

Together with the Bureau's employees, readers will travel not only through the cosy streets of the City of Hamsters, but also through an underground river, a creepy hotel, tame dough, flood, and even....ghosts, despite the tricks of the hamster's unfriendly neighbours - rats.

In addition to exciting adventures, the book introduces real inventions of mankind: a heat pump, "singing" fountains, a power station, a magnetic lift, processes of making coloured glass, melted cheese, and baking bread.