When Emma promises her younger brother, Ben, that they will be able to spend Christmas with their father she is confident that Santa will read her letter and work his magic.

But when an unthinking adult shatters her belief she decides to take Santa’s place and make sure Ben gets his Christmas wish.

On Christmas Eve the two children sneak out of their grandmother’s house planning to walk across the city and find their father but soon they are lost in a swirling snow storm.

Ahead of them lies a world of adventure and at the end of their journey Emma will learn what she really wants to know – The Truth about Santa.