When Detective Inspector Marco Ramirez is called to the remote Cornish island of St Mary’s, he unravels the biggest mystery of his entire career.

An investigation into a suspicious arson uncovers the seeming murder of an innocent recluse and a key to unlocking an ancient mythical prophecy.

Marco is unwillingly thrown into a secret world of magic, mystery and mayhem and discovers a looming demonic plot of global domination.

With the help of an unlikely ally, can he seek out a group of unsuspecting strangers in time to save humanity as we know it?

As the Custodians adapt to their new roles as the saviours of humankind, they quickly learn that their normal lives are a thing of the past.

When people begin to mysteriously disappear across the country, our heroes suspect the involvement of a certain demonic faction, which is only emphasised by a grave message from Harriet.

But a twist of fate hurls them into a journey across the globe, seeking out a magical almanac that may aid them in defeating their most powerful adversary and save their loved ones, once thought to be lost.

Will they manage to locate it in time, before the Hellions rise up from the ashes, and take what they believe is rightfully theirs?