Aunt Tabby and Uncle Drac are heading off to Transylvania on Araminta's birthday--without Araminta. To make matters worse, Araminta will have a babysitter. When that sitter turns out to be Araminta's supercool cousin, Mathilda, things start to look up--except Mathilda shows up with two rowdy ghosts who destroy the house and ignore all the rules. Can Araminta come up with a Plan to get rid of these two bad ghosts once and for all?