In 1962 Hong Kong, a newspaper editor and his wife move into a new building, where they befriend a beautiful secretary and her executive husband. As their spouses frequently leave them, the two couples grow close, bonding over shared interests. However, their friendship is tested when they discover their spouses are having an affair, leading them to find solace in each other and vow not to repeat their partners' mistakes.

In the Mood for Love
A couple who initially bonded over their distrust of cheating partners form a strong connection while making a pact to keep their relationship platonic to avoid falling prey to the same temptation.