Taking place in 1941, Love in a Fallen City centers on Pai, a young woman who has been ostracized by her family for divorcing her rich husband. A local match-maker, Mrs. Hsu, takes pity on Pai and decides to bring her to Hong Kong, under the guise of employing her as the Hsu's nanny, but in reality to introduce her to Fan. Pai and Fan seem to hit it off, but Fan's refusal to marry Pai soon sours things. However, as the Japanese begin to invade Hong Kong, the two begin to realize their true feelings for each other.
Cora Miao
as Pai Liu-So
周潤發
as Fan Liu-Yuan
Keung Chung-Ping
as Pai Lao San
Lisa Chiao Chiao
as Third Sister-In-Law
馬海倫
as Mrs. Hsu
鍾景輝
as Mr. Hsu
黎燕珊
as Piao Hong
Jovy Coudrey
as Indian Princess Siddhartha
Elaine Jin
as Louise
翁世傑
as Pierre
Huang Man
as Pai Liu Su's Mother
Chin Chuan
as Fourth Brother