1949: When a scientist discovers his worst fears have come true - that horrifying elder beings from another dimension are using cults on Earth to facilitate their enslavement of humanity - he assembles former comrades, associates, and even old enemies in order to combat the menace. Alongside him fight his former assistant, granted superhuman powers, as well as a Canadian soldier, a Russian soldier, an American mobster, a Spanish anarchist, and a jaded beat cop. Against them are arrayed a host of grotesque extra-dimensional creatures, and the mutated human leader of their cult. Humanity's last hope is The Seventh Shadow, but will it be enough to turn back the tide?

"To defeat an unspeakable horror, they must unite...or perish!"