An eternal night suddenly falls across Earth, allowing vampires to emerge from the shadows and launch a coordinated attack on an unprecedented scale. The Avengers, Spider-Man, Doctor Strange, Blade, and several other heroes struggle to protect the survivors as vampire forces gradually seize control of entire territories. But behind the invasion lies a far greater plan connected to the origins of vampires and powers capable of reshaping the balance of the world. Deprived of daylight and facing an ever-growing enemy, the heroes must unite before Earth is permanently consumed by darkness.