The Trap of the Three Whales, or Strange Inheritance

If to solve the crime it is necessary to infiltrate the troupe of a famous theater and become real artists, then so be it, even if it means sifting through all of Krylov's fables, transforming into the 'pig under the oak', and then selflessly playing the three little pigs. Who is plotting and sabotaging the performances? Is it theatrical intrigue from competitors or is it something much more complicated? Or perhaps the thread leads to a distant, mysterious past?.. This is what three young detectives - Anya, Vita, and Pashka - will have to figure out.