After being left at home by himself for the holidays, 10-year-old Max Mercer must work to defend his home from a married couple who tries to steal back a valuable heirloom.

While trying to make his sister's wedding day go smoothly, Jack finds himself juggling an angry ex-girlfriend, an uninvited guest with a secret, a misplaced sleep sedative, and the girl that got away in alternate versions of the same day.