It is a time-travel anti-Japanese novel that unfolds from the perspective of modern young man Chen Dong. It tells the story of how he accidentally traveled to the battlefield in 1937 and how he used space and modern knowledge to change the situation of the war. The story begins when Director Chen, as an ordinary employee, is accidentally involved in a time and space rift in a car accident. He travels to the Anti-Japanese battlefield with a mysterious space that can be stored, and initially comes into contact with Eighth Route Army soldiers. He quickly adapts to the new environment and completes his first life-and-death test. The first dilemma moment occurred when he used space resources to help his comrades. His identity was suspected by his superiors and he faced a crisis of trust. He chose to show wisdom and courage and won the trust and respect of his comrades.