Romka dreams of becoming a great detective, no worse than Sherlock Holmes. In the meantime, he is practicing on all sorts of little things and looking for new things to do wherever possible. For example, after a terrible thunderstorm, one girl in the village lost her toys. The most noticeable of them - a huge blue crocodile - was found on the sports ground. Well, who could need shabby old things? Of course, Romka takes up the investigation and quickly realizes that the main loss is not toys, but an old laptop with an article that can save Clear Lake...