One fateful night in 1937, amidst the bombings of Shanghai, Tung (Kenny Bee), a young soldier, and Shu (Sylvia Chang) find solace under the bridge. In the semi-darkness, though unable to see each other clearly, the young couple experience an immediate attraction towards each other and plan to meet again when the war is over, under the same bridge.

Ten years have passed. Tung awaits his breakthrough as a promising songwriter, while Shu fends for herself as a showgirl in a nightclub. Enter Stool (Sally Yeh), a young girl in search of her relatives. Her efforts prove fruitless until she crosses paths with Shu, who takes Stool into her home. Soon, they form a close, sisterly relationship.

By a twisy of fate, Tung moves into the same building as the two women. Stool finds herself falling for Tung. Meanwhile, Shu and Tung are drawn to each other, unaware that they have met under that bridge many years before.