Chu Weiguo worked in the grocery store for eight years, signing in every day, and accumulated a lot of skills, but he only dared to pretend to be a grandson. Until that day, when he saw nurse Shen Xiuying blocked in an alley by Japanese soldiers, the system suddenly exploded: 'The main mission has started, the target is Sato Ichiro. 'He picked up the bricks on the ground and used the skills he had signed for eight years for the first time. At this time, all the Japanese in Shanghai began to look for him. But they didn't know that the place where Chu Weiguo signed in was their headquarters, military police, and arsenal. In the past eight years, he has already figured out their background.