Moomintroll, as we know, spends the entire winter hibernating—and in this respect, he's no different from any other Moomin. But when he wakes up in the spring, he's more than willing to do something unusual. For example, he might climb a mountain with his friends Snufkin and Sniff and discover a forgotten black top hat at the top. And it turns out it's not just a pretty hat, it's a hat that can work magic! With it, you can defeat Antlion and ride on cute clouds, but there's one problem: you never know what the hat will throw out next. Maybe it's time to get rid of it? But, as it turns out, that's not so easy. And the real magic will begin when the hat's real owner arrives in Moominvalley... The book you hold in your hands is a real event. For the first time in many years, the entire Moomin series has been retranslated into Russian! Those already familiar with the inhabitants of Moominvalley will be delighted to experience their adventures in a new light. And those who are yet to experience Tove Jansson's magical world for the first time can only be envied!