"In the Mood for Love" is part of a loose trilogy of films by Wong Kar-wai, which also includes Days of Being Wild (1990) and 2046 (2004). While not a direct sequel in a linear narrative sense, 2046 builds upon and references characters and themes from both Days of Being Wild and In the Mood for Love.
Yuddy, a Hong Kong playboy known for breaking girls' hearts, tries to find solace and the truth after discovering the woman who raised him isn't his mother.
In 1962 Hong Kong, neighbors Su Li-zhen (Mrs. Chan) and Chow Mo-wan (Mr. Chow) discover their spouses are having an affair. As they spend time together, they develop feelings for each other, but their relationship remains chaste and unspoken, reflecting societal constraints and their own moral compass.
Women enter and exit a science fiction author's life over the course of a few years after the author loses the woman he considers his one true love.