A high-ranking member of a secret organization that battles supernatural forces wakes up in a London park with no memory, no idea who she is, and with a letter that provides instructions to help her uncover a far-reaching conspiracy.

"September, 1940. Three women of the Checquy, the secret organization tasked with protecting Britain from supernatural threats, stand in the sky above London and see German aircraft approach. Forbidden by law to interfere, all they can do is watch as their city is bombed. Until Pamela, the most sensible of them, breaks all the rules and brings down a Nazi bomber with her bare hands. The three resolve to tell no one about it, but they soon learn that...