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?