Tilde is a boy with wings. He lives in Lesnoy Urochishche and is friends with the beaver Beaver, the squirrel Naushka, the chipmunk Bronya, the woodpecker Nok, the dragonfly Zola and the bumblebee Zhur. One day, cuckoo bumblebees - thieves and murderers in the bumblebee world - flew into the forest. Zhur's family was in mortal danger and he asked Tilda for help. The friends came up with a trap with a smoker, a collapsible hive and bumblebee honeycombs, found a nest of cuckoo bumblebees in the hollow of an old linden tree and used smoke to drive the robbers out. The bumblebees flew into the hive with honey, where they were locked up. No one knew what to do next. And then nature came to the rescue. The hive was struck by lightning and the cuckoo bumblebees were gone.