For over a year now, mysterious murders have happened throughout the city of Raiden, each one unsolved, and no one knew who would be next, or even when.

Not a single person had solved it, because not a single case had him.

Kade Gear Wonder, detective of Steel Rooks' Agency, and child of the ever famous Celeste Steel Vuur, finally got a chance to take a shot at the case, and it was simply too easy to fall into a rabbit hole going through the earth.

Prophesies, strange people, stranger humanoids, grotesque 'Living Machines', a Timeless Man after a group of children known as Lake Children, dreams he can never pinpoint and the daughter of the Timeless Man in his case, the one piece of the puzzle he needs, and it falls to him to solve it all.

Assisting a rebel group and the group of 18 Seconds, Kade unknowingly also finds himself at the center of another mystery that is deeper above than it is below. And all he has to do is remember.