In 1942, there was a severe drought in the occupied areas of North China, and hungry people were displaced. Lin Shuyao, the gentle and sickly daughter of a wealthy businessman, whose family was exterminated by the Japanese army, disguised herself as a refugee and sneaked into the enemy's rear to become an underground party intelligence agent of the Chinese Communist Party. The sunny and upright guerrilla captain Chen Yuanshan was ordered to escort a group of refugees to relocate, and met Lin Shuyao on the way. The two went from testing each other to fighting side by side, and gradually got closer to each other amidst war and famine. However, Lin Shuyao's "yandere" secret constantly collides with Chen Yuanshan's stubborn principles, and the Japanese army's encirclement and suppression and the shadow of internal traitors make this relationship and mission more and more difficult...
