Seven-year-old Hallie and 13-year-old Ethan have one wish for Christmas: to get their divorced parents back together. They figure if they can only get them in the same place on Christmas Eve, everything will work out, mom will dump her stuffy boyfriend, and dad will reasonably explain why he left his lucrative Wall Street career to manage a diner. The children enlist the Macy's Santa and their grandmother to help the process along.