The cartoon series stars Sergeant Dandy, who solves crimes, catches crooks, burglars and thieves like a determined policeman. Dandelion's friends are Peekaboo, Blondie, Kati, and his dog, Marzipan, who also "acts as a siren". With our heroes, you can take part in the discovery of a cave, the capture of a bank robber, the chase of a dangerous conman who deceives people in various costumes and masks, but he can't catch Dandelion. If you watch the series, you'll find out how different manoeuvres can be used to keep children from jumping off the top of a crane. The series also has adventures for the summer, for beachgoers whose clothes have been stolen by a thief and which are of course recovered with the help of our protagonist. And in the episode "Dandy's Day Off", the series draws attention to the dangers of hiring hitchhikers.