The worlds are divided: The land of men, Earth, and the land of the monsters, Netherplains. For many years, these two worlds are separated in accord to a truce between the two faction. But nothing lasts forever. There are forces willing to break the peace just to be crowned ruler of everything. Join Nivrae, Mitsu, Doer and Orange as they face monster world's deadliest terrorist, Gates and the Mergers, and see how everything is all connected, and how the present's action disrupts both past and future.
Five High school teens encounter a highly dangerous monster that took over one of their friend's life and now it's taking all their lives slowly but all of them are highly brave and intelligent enough to try and take action to into their own hands to protect their best friend and the close people in their lives.