The Grazlax is out of control! Tom's used up all of his magic, and Benny's science is useless against a creature from beyond the stars. It's a race against time for both humans and Nekross.

Tom is influenced by wizard Jackson Hawke to dabble in dangerous magic despite Benny's warnings. All three are unaware that alien Prince Varg is closing in on them and determined to make it personal.

The forbidden Grim Magic is taking its toll on Tom. Benny can't help as he's been enchanted. Tom's Dad and Gran fight to reach Tom in time, but dawn is rising, and the final confrontation is about to begin...