Former campus lovers Su Yi and Li Yi reunited in the troubled times of the Republic of China. One was an underground party member disguised as a cheongsam designer, and the other was a cynical military agent on the surface. The two test each other in the song and dance hall and in the hail of bullets, but they do not know that each other is a comrade fighting to protect their homeland. When their identities are revealed, what awaits them is a life-and-death choice of faith and love.
