Izzy, a lively 9-year-old, finds herself in a predicament when her busy parents are unable to pick her up on time on the final day of school before the Christmas holidays. A snowstorm adds to the chaos, but the real trouble comes from two villains shivering in an ice cream truck. When the school’s janitor is taken hostage by these intruders, it’s up to Izzy to come to the rescue.