In The Power of One Smile, Claire feels invisible at school until she discovers the magic of kindness. Through a simple act of smiling at someone who needed it most, she sparks a chain reaction that transforms her school and creates the Smile Club. Together with her friends Leo, Max, Maria, and Sam, Claire learns that even the smallest gestures of kindness can change lives, build friendships, and bring a community together. This heartwarming story teaches young readers about the importance of empathy, inclusion, and the powerful ripple effect that one person's kindness can have on the world.