Claire is a friendly and happy girl. She's a first grader and a bit too perfectionist: she thinks that making mistakes means failing and she doesn't want to see her teacher's red Xs on her tests, she's scared of them. So she begins to feel bad, till one day her tummy starts hurting so much. "What if the naughty Red Xs Monster is growling in my tummy?" thinks Claire all scared. That night, while Claire is asleep, a special friend comes to the rescue to help her overcome her fear: it's Edward the little magic star! With a slight touch of magic wand, the two friends will travel toward the wonderful Star Kingdom, where Edward will teach Claire something special and important: making mistakes doesn't mean failing, but receiving the opportunity to learn something new. The little Claire will understand that she doesn't have to be scared of her own mistakes; instead, she has to learn from them. But is this story just one of Claire's dreams? Or is it for real? Let's find out together reading the book!