This time the adventures of Romka and his sister Leshka began with the fact that they found a wounded dove. And not just any one, but a very thoroughbred one. The young detectives immediately decided to find out the bird’s past and find its former owner. But their plans were thwarted by one extraordinary circumstance. An unknown attacker tried to poison the guys' faithful dog and kidnap the dove! The angry Romka firmly decided to take revenge on the criminal and, according to all the rules, set up a cunning ambush on him... Previously, the story was published under the title “The Case of the Blue Bird.”