In a magic kingdom at the start of the 21st century, a wicked Queen turns Prince Wendell into a dog. To escape her evil clutches, the Prince jumps through a magic mirror, landing in New York at the feet of Virginia, who is on her way to work. Soon Virginia and her father, Tony, are themselves lost in the magic kingdom, with a dog who is really a Prince, and three terrible Trolls, who are never far behind.