When female student Chen Jingfen went to Hong Kong to visit her fiancé Bai Kanru, she met Bai's classmate Lin Huaibing. Because Bai was secretly engaged in the work of purchasing and transporting arms for the Communist army, he had no time to take care of Jingfen, and soon she fell into the arms of Huai Bing. Huai Bing was used by a female spy, and his arms were blown up by the enemy. Jingfen was very disappointed with him, and she returned to the mainland to join the death squads...