A "death work order" fell from the sky: whoever signs for it will enter the game.
Former board game designer Shen Ye used his brain to design rules to break down rules, and former criminal profiler Lin Wan used his mind-reading eyes to stare at people's hearts.
One is a troublemaker, the other is a watcher. The two work together to turn every order of the death courier into a highly intelligent counter-killing game.
Until the host "Old K" reveals his true face - this game has been tailor-made for Shen Ye from the beginning.
