Tshiu-Bi and her husband Siu-Gi have a seemingly perfect marriage but still have no children. When Tsiu-Bi's friend, Le-Hun, a single mother, is forced to work in a nightclub to raise her son, Tshiu-Bi tries her best to help her. However, unbeknownst to Tshiu-Bi, Le-Hun and Siu-Gi were once lovers. To avoid complications, Le-Hun decides to move away, only to run into Siu-Gi again in a nightclub. After a night together, Le-Hun becomes pregnant. When Tshiu-Bi learns this startling truth, she makes a surprising decision.

Adapted from a Japanese novel and film, The Husband's Secret dissects social relations through its tear-jerking, love-triangle melodrama. Differing from other films of the period, LIN's work gave greater voice to female characters, addressing feminine consciousness and the mutual support among women. This representation broke away from traditionally ill-fated female characters, allowing audiences to reconsider established family structures and gendered power relations. Additionally, the film uses an occasional third-person female voice-over that both sympathizes with, and judges the characters, adding to the emotional stakes.