This is a funny and touching story for children about running, love, friendship, support, about knowing yourself and the world around you. The main character, Theo, cannot sit still and loves to run. Just like his mother, for whom running is an integral part of life. Theo knows a lot about runners, but still, when he prepares to take part in a children's race, he has a lot of questions in his head. What does it take to become a champion? How do you learn to always be the first? And most importantly, how and when can he tell his mum his secret, which will explain why he is such a 'fidget spinner'?

In addition to the fiction, the book contains cognitive information: how to eat for young runners, how to choose comfortable running shoes, what is heart rate and why it is important to measure it, what are marathons, half marathons and children's races and how to take part in them.

And every young reader who reads the book to the end is guaranteed to receive a medal.