Feluś is a preschooler and experiences different emotions every day. A visit to the doctor will prove to be a test of courage. Preparing breakfast for parents will be something to be proud of. And when a friend runs across the newly built sand castle, Feluś will be angry. Do these experiences seem familiar to you?

As always, Feluś is accompanied by his beloved teddy bear Gucio, who translates the intricate language of emotions into experiences of the senses that are close and understandable to every child - for Gucio, joy has a sweet taste, peace resembles the sounds of a harp, and longing is like a rainy day.
While reading the book, the little reader will find himself in many well-known situations. Together with Feluś and Gucio, he will learn to recognize, name and accept his emotions. He will also know where they come from, how to express them and how to deal with them.