What would happen if you lost your best playmate? Wouldn't you feel very sad? Join Arantxa on her quest to find her favorite toy and learn with her how to manage a new emotion that will steal the color from even the most beloved toy, Rati. This story explains to parents and children alike how their brains work when they are sad and the different ways adults deal with children's sadness and its consequences for them. Unfortunately, sadness is often punished in both children and adults, while we always reward other, more pleasant emotions like joy and curiosity. Sadness is an emotion that makes us quite uncomfortable. In fact, adults often say "don't cry" or "don't be sad" to eliminate this unpleasant yet necessary emotion at its root. As we all know, children go through complex developmental stages during their emotional growth. Affection, understanding, and patience are essential to help them continue growing up healthy and happy.