Mason the moose gets mad when his brother steals his turn to play seeker in a forest game of hide-and-seek. Follow along as Mason experiences anger, acts out physically, learns to cope with his emotions, and eventually rejoins the game. With a focus on social and emotional learning (SEL), tightly controlled vocabulary, and bright, fun illustrations to match the storyline and enhance empathy, children will learn about anger and its associated thoughts, bodily sensations, and reactions in a supportive educational fiction reading experience.