When she was seven years old, Lin Wan lost everything in the blood, her memory was tampered with by her enemies, and she became a killing machine numbered "Seventeen". Ten years later, Gu Linyuan, an agent of the Foreign Object Bureau, rescued her and revealed the truth: the "key" mark in her body was a foreign object in time and space guarded by her parents' lives, and it was also the key to opening the door to destruction.
After returning from the bloody battle, she took back her family with thunderous means and joined the Foreign Object Bureau to inherit her parents' codename. From then on, we embark on a global journey to hunt for foreign objects - the ancient mirror of Venice glimpses the future, the dagger of Cairo cuts space, and the memory crystal hides shocking secrets. She and Gu Linyuan gradually fell in love from a life-and-death partnership, but eventually found that they were in opposing positions: he was the guardian of the current world, but she was the key to the new world.
When the seven foreign objects are gathered together, the "Door of the End" is about to open. Behind the door is the hope of reuniting with his parents, or is it the abyss of the world's collapse? Between the muzzle of her former lover's gun and the burning key in her palm, she must make the final choice.
This is a war about time, memory and redemption. And she will eventually control her own time.
Concept: Eternity is not the length, but the depth of this moment
