Billy misses his mummy very much. She lives in the clouds. Some days the sun is shining and Mummy’s clouds are nowhere to be seen. Those are Billy’s favourite days. He and Daddy would play in the garden all day long, and Billy knows that Mummy is letting the sun shine for them. But not all days are like that. Sometimes Mummy’s clouds are dark, and Billy feels sad and alone. This moving and sensitively-written picture book gently explores grief and teaches children how to deal with their emotions surrounding the death of a loved one.