On August 13, 1937, the Battle of Songhu broke out.
Shen Zhiyuan, a doctor of cryptography who studied abroad, was killed by No. 76 During his first intelligence mission.
He thought he was dead.
But he opened his eyes - back to three days ago.
He was holding a newspaper in his hand that shouldn't be there, and there was a shallow scar on his left wrist.
Once he dies, he forgets a memory.
He exchanged death for information and oblivion for victory.
144 Opportunities, he used every one less.
He is a scheming figure in the espionage chess game - a monster that has been repeated more than three hundred times.
He is looking for the truth in the rules of the copy - who is the observer?
Loop for what?
He forgot the names of his comrades, his mother's face, his sister's name, and why he cried.
But he remembered—it had to be done.
When the last cycle comes, he faces a choice: retain the mission memory and complete the mission?
Or keep the memories with her and be a complete person?
"I forgot the whole world, but I remember you. That's enough."