It's an unforgettable Christmas for the townsfolk of Wellington-on-Sea when the worst snowstorm in history alters everyone's plans, including Santa's.

In order to make good with his former employers, a submarine captain takes a job with a shadowy backer to search the depths of the Black Sea for a submarine rumored to be loaded with gold.

After spending the night together on the night of their college graduation Dexter and Emma are shown each year on the same date to see where they are in their lives. They are sometimes together, sometimes not, on that day.