Parked for the summer at his great aunt and uncle’s farm, Harold is soon hip deep in mystery. What exactly is wrong with them? What are they up to? Is there any way to save himself? But things keep getting worse as Harold and his newfound friend, Samantha, set out to rescue her missing sister. First, of course, they have to find her. And that won’t be easy, not when both the zombies and their frozen masters seem to be gathering in a dark cloud against them.