The bone bangle is a key, and the brand that marks her as a test subject.
After her father dies in an "accident," Jiang Jian Yue receives an unidentifiable bone bangle and a death warrant from an organization called "∑." In her darkest hour, she meets Lu Zhao Wen, a man who is also hunting ∑.
On the run, she discovers that this "Luan Key" is no ornament. It is proof of identity that can unlock the ultimate legacy of the Deep Blue Project. Fifty years ago, humanity tried to connect with an unknown entity deep beneath the Earth's crust, the "Origin Point." The experiment failed, triggering the world-destroying "contamination." Now, ∑, the remnant force of the project, has splintered. Some want to regain control, while others want to completely "format" the consciousness of all existing humans.
From undersea ruins to the depths of the Earth's core, from a bioengineered deserted island to a suspended platform. With every hunt and escape, Jiang Jian Yue draws closer to the truth: she is no ordinary person, but "Sample 07," at the heart of the project, a "living key" capable of communicating with the Origin Point. The truth Lu Zhao Wen seeks about his younger sister is closely tied to all of this as well.
Energy below 8%. Final moments of the countdown.
At the place where she must make her final choice, the ultimate question left behind by her father flickers coldly across a holographic display: Should she execute "Lullaby," formatting everything in the hope of "purification"? Or should she attempt to synchronize with the awakening Origin Point and bet on a slim chance at a future for humanity amid endless contamination?
The pursuers are right behind her. The key on her wrist is about to go dark.
The survival of civilization rests on a single thought from her.
