Lily is nine; her sister Daisy is one—and she's no ordinary baby. Somehow, when she was born, something went wrong and now Daisy is a Witch Baby. Nobody knows this but Lily—she's the only one who can see when Daisy makes the fridge float in the air, or turns people into slugs, or summons up her very stinky dog Waywoof. The sisters have just moved to a new neighborhood, and their mom wants them to make friends. Will the party be a big success or will Daisy's magic mean things are even more chaotic than normal?