Chapter 693 - 683: Mist Attack
Half an hour earlier, near the hotel where superpower users from the various regions were being accommodated.
Stein, wearing a brown coat, sneaked into a residence and, without hesitation, used a silenced pistol to kill the entire household.
He then went to the cellar and, wielding a sledgehammer, smashed a wall to reveal an ancient tunnel behind it.
The tunnel was covered in cobwebs, and the floor was piled with a thick layer of dust, indicating that it had been at least a hundred years since anyone had set foot in it.
Stein cautiously made his way to the end of the tunnel and saw a large metal door carved with patterns of eyes and tentacles.
At the bottom of the door, there was a stone slab with a nine-square grid, eight of which were movable tiles, and the last was empty.
Stein spread out his palm, where he also had a small cube that appeared to be the missing piece from the puzzle.
It seemed that the eight movable tiles constituted a puzzle, and the piece Stein held was the key. By arranging the tiles correctly and inserting the piece in his hand, he would be able to take out whatever was behind the door.
The cube in Stein’s hand was provided by Bai Du, who had also explained to him how to solve the puzzle.
However, Stein was puzzled as to why Bai Du did not come to open the door himself despite the lack of danger along the way, instead sending Stein to do it.
Although Stein had signed a contract with Bai Du that guaranteed no harm would come to him here and that Bai Du would immediately reveal the method to evade the Hound upon completion of the task,