[Double entrance + surrender to the country + no female protagonist + espionage battle of wits + tribute to the martyrs + making up for historical regrets] Shen Lian, a modern instructor, accidentally opened a time and space door leading to Shanghai in 1939. At the beginning, he was surrounded and suppressed, and he was in a desperate situation and was in danger! Those latent heroes who unfortunately sacrificed their lives in history, and those secret sites that were in danger due to betrayal by traitors, this time, Shen Lian will join hands with the power of the future to rewrite their destiny! Shen Lian: "Ancestors, you used your lives to protect the future in the darkness. Today, the future comes with light, giving you the power to destroy the darkness and protect your homeland!"
