Simon's task is simple: travel back seventy years. Figure out how the apocalyptic Rift began. Come back to his own time, without causing any paradoxes. Hope he'll learn enough to close the Rift, before it swallows the world. It would be easy, if he didn't start to catch feelings for the man who caused it all.

You just landed in hell. Unbeknownst to you, yes! The place actually exists and you've been bad enough to get yourself here, but where you really that bad?