On the night of his eighteenth birthday, Jiang Muchen received a warning email from his future self, seven days ahead: "Don't answer the call at 23:17."
When the phone rang right on time, the pocket watch grew hot in his palm, and the dial revealed a girl in ancient dress who had been trapped for three hundred years. She said her name was Shi Yuan, the remnant soul of a Time Engraver who had been sacrificed, and Jiang Muchen's left eye was awakening to the ability to observe time.
At that moment, the Chronal Scar Index in Jinghai City exceeded its critical limit, and rifts in time spread like a virus. An organization called the Shadowweave Society began hunting all Awakened, while Jiang Muchen discovered that his parents' disappearance, the city's strange phenomena, and even Shi Yuan's imprisonment all pointed to a failed sacrifice three hundred years ago.
To uncover the truth, he must unlock the pocket watch's seven seals, travel between seven points in time, and fight hunters who can manipulate time. But every time he uses the Eye of Time, Shi Yuan's existence fades a little more.
When the final choice arrives, will he become the eternal keeper of time and protect every worldline, or sacrifice his eyes to give her a whole lifetime?
Jiang Muchen gives a third answer.
"Time will pass, but love won't. I choose a finite life, with you."
