A group of young urban explorers and a private military unit could become the final pieces in a 60-year plan to reopen a door that should have stayed closed. But what they unleashed could almost tear our world apart.

In 1955, NATO and the Allied Forces conducted secret, occult experiments in a bid to win the Arms Race. They succeeded, but what they unleashed almost tore our world apart. Now a group of young urban explorers and a private military unit could become the final pieces in a 60-year plan to reopen a door that should have stayed closed.—Matt Mitchell