Night loomed over Cardiff. Most of its citizens were warm in their beds, totally unaware of the storm raging over the city. But this was no ordinary thunder storm; this was the work of the Mystics. They used the energy created during thunder storms to sniff out their prey.
They had traveled across time and space for many centuries to find their bounty: a man known only as Captain Jack Harkness, and they would stop at nothing to find him. Not after what he'd done to them. They would exact bloody revenge on him.
The Mystics' hatred for Jack was the one thing that had kept the race going-saving them from destruction in the Time War, though their home planet was long gone...or their mystical powers told them. If Jack hadn't destroyed their way of life the Mystics might have been able to survive the war.
The Mystics would destroy the planet Earth, but not until Jack Harkness suffered the way that their race had. That was a promise....