"The devil is not that easy to spot. He's all around us, right in front of you, even inside you. He's not just some simple hellish entity you know."

At the beginning of the 21st century, Hellgate—an organization of devil worshippers—arises to threaten the entire world. Declared a Global Threat by the United Nations, all nations unite in Project VEDICT, which involves research and the formation of a special force to anticipate this cult.

Among them was Naoya Kuroda, a soldier who once found warmth among his comrades. However, as tragedy struck repeatedly, hope began to fade.

In a world shrouded in darkness, one question remained unanswered:

Can they continue to move forward with broken hearts, even though their bodies remain intact?