It’s Superhero Day at school! Milly is dressed to impress with a fantastic costume—complete with tinfoil, a tea towel, and even her brother’s pants—but she soon realizes she has no real superpowers. Instead of soaring through the sky, she helps classmates in small but meaningful ways. By being kind, clever, and courageous, Milly discovers that her real superpower is kindness itself. The story wraps up with an uplifting message: everyday acts of kindness make you a real hero.