High on the hillock lives a... little monster! The residents of the nearby village believe that the weather changes according to its mood. For days, the little monster has felt lonely and the weather has been terrible. The villagers, wanting to please it and see the sun again, decide to send it a cake. But is this the cake that Terris wants to change its mood, or is it something else?

In order for children to secure a healthy social life based on effective relationships, they must cultivate empathy, the ability to put themselves in others' shoes, to understand and feel things in the same way that another person experiences them. This need is addressed by the books in this series, which promote emotional intelligence. With the suggested approach for parents and educators, they aim to teach children to see the world through others' eyes, after first learning to recognize and manage their own emotions.