Mabel's a bit miffed that she doesn't have any magic. But she's still the big sister -- which is a power all its own. She can put Violet's magic to good use! With a snap of her fingers, Violet gets Mabel's things sorted and priced for the upcoming garage sale. Violet even uses her magic to enchant some of Mabel's toys! Then Violet conjures a pool for their yard -- and refuses to make it disappear. That's when Mabel knows their fun has gone too far. What will the neighbors think? And how will she ever explain this to her parents?