During the Second World War, the three countries of Teutonic (Germany), Rome (Italy), and Rising Sun (Sun), which believed in fxs, gradually fell into the quagmire of war, and the balance of victory gradually tilted towards justice. The Teutonic leader assembled scientists from three countries to launch the "Nirvana Rebirth Project" and organized a scientific expedition team to find a manuscript in the Xishen Mountains in China that could use magic to create a space continent. Based on this, he created another Western fantasy world space and named the area he built "Demon Realm".
Researchers from these three countries cultivated and used magical military power in an attempt to use this method to turn the tide of the war when it was unfavorable.
However, due to the defeat of the frontline war, the defense line resisting the Allied forces was destroyed by the overwhelming offensive. The Demon Realm, which was not even a semi-finished product, could not play its role at all. The research institute also came to the city. The researchers had to hide in the unfinished Demon Realm in a hurry and prepare for a comeback. After the researchers hid in, a big explosion occurred inexplicably in the institute, and the demonic realm lost contact with the real world.
Since then, many legends have emerged among the people. For example, after fighting the Japanese army on the Chinese battlefield, some people once saw spirits floating in the air using crosses to extradite heroic souls into the demonic realm.
However, in the 21st century, this story that the world thought was fabricated gradually faded out of sight. However, during a military exercise near Yanshan, China, a supernatural event suddenly occurred. A military truck transporting goods disappeared inexplicably. At this point, the connection between the two worlds gradually connected, the gears of destiny began to turn, and a bloody war from the Demon Realm and a heart-stirring hymn were staged!
