Up in the little mountain lives a... little monster! The inhabitants of the nearby village believe that the weather changes according to its mood. For days, the little monster has been feeling lonely and the weather is awful. The villagers decide to send it a cake to make it happy and see the sun again. But is this cake what Terry wants to change its mood, or is it something else?

In order to ensure children have a healthy social life based on effective relationships, they must cultivate empathy, the ability to put themselves in others' shoes, understand and feel things the same way another person does. This need is addressed by the books in this series, which promote emotional intelligence. With the proposed approach for parents and educators, they attempt to introduce children to seeing the world through someone else's eyes, after first learning to recognize and manage their own emotions.