In 1944, on the eve of the Battle of Western Hunan. The "Sincerity" agency of the Japanese army formulated a top-secret plan code-named "Avalanche" in an attempt to paralyze the command center of the Chinese army before the battle began.
Shen Moyan, an ordinary intelligence agent of the underground party of the Chinese Communist Party, has an unknown secret - his brain is a "humanoid recorder". All the information he sees with his own eyes, whether it is secret codes, military maps, or interrogation confessions, will be accurately "engraved" in his memory and will never be forgotten.
But he also suffered a price that ordinary people couldn't bear: a splitting headache when the information was overloaded, and the corrosive overwriting of the cipher text by his memory when he witnessed the sacrifice of his comrades. During a mission, he accidentally intercepted a corner of the "Avalanche" plan, only to find that the information in his mind about the core part of the plan was being crazily devoured by a tragic memory of death...
When memory itself becomes a gap for the enemy to break through, and when the most reliable comrade may also be a lurking undercover, Shen Moyan must use his own brain as the final battlefield to complete an impossible mission before forgetting.
