When eleven-year old Patty Pringle answers a help wanted ad, she has no idea that she will soon be embarking on an adventure that will change her life forever. Patty and her younger brother Sean go to the mall to meet Santa, which is when Sean steals some of the letters that children have sent Santa. Determined to return the letters to Santa, Patty teams up with an elf named Agent 12-25, who takes her to the North Pole. At the North Pole, they discover that it is too late for Santa to deliver the toys that the children asked Santa to bring them. Hoping to save Christmas for these children, Patty and Agent 12-25 set off on a mission to deliver all the toys by midnight on Christmas Eve.