The inquisitive mind of Misha Sherlock Holmes always found work for himself, and one day the boy became interested in insectivorous plants. Everyone knows that some predatory sundew can easily snack on small insects, but only in a nightmare can you see a giant carnivorous plant having lunch. The ardent imagination of an admirer of Sherlock Holmes imagined all sorts of horror stories, but Misha could not imagine that his purely theoretical reasoning would turn into a real nightmare. It all started with Kostya’s father, a biologist by profession, growing a giant predatory Nepenthes vine in his garden in a jug-trap which could easily fit a small child. And then events began to spin, as if in a kaleidoscope: first, the neighbor’s cat disappeared without a trace, then little Elizabeth, who came to visit, and to top off all the troubles, the voracious vine spoke in a smoky male voice... Probably, in such a situation, the real Sherlock Holmes would have given up, not knowing , what to do, and what was it like for an ordinary boy who was beset by all these monstrous riddles? At first, Misha, like everyone else in the area, suspected the predatory Nepenthes, but then the detective thought about other circumstances of this strange case. The little black girl Elizabeth was a real princess in her homeland, and possible kidnappers could receive a large ransom for the crowned person. Here's the motive for the crime... What about the talking Nepenthes? Was this someone's stupid joke? Questions, questions... Misha felt that all the events were connected, but he could not understand this connection. And time moved inexorably forward, and the threat to the little girl’s life grew stronger...