It all began with a lullaby. Jess Salgado opened his eyes and found himself in the middle of nowhere. A girl of unknown origin appeared in front of him, and she tried to allure him—he felt the sudden Cain Suddenly doesn't know what he was doing; he only followed her twin sister's lyrical voice—to stab that knife directly to her neck. Morana Suddenly assisted him but failed when Jess arrived at the scene. Confused, Morana lures him to be part of his twin brother personality, "first murderer" Suddenly. Jess will never be the same as he found out his ability to live in two distinct realities at the same time. While traveling and experiencing another reality, he searches for the secrets of the unknown world while doing the exact same thing in his original world.