When a friend of Grandpa's complains of ghostly shrieking in the long-ago burned-out Waverly hotel on the edge of their town, Murky Creek, Phantom Finders Abby and Theo use a hotel master key and brave a raging snowstorm to find out what all the noise is about and hopefully stop it.

While spending the summer at their grandmother's Vermont inn, two prankster siblings awaken young ghosts from the inn's distant past who refuse to "rest in peace."