Mia Luang is a story about a very wealthy, famous, well-educated, and respected couple. Everyone assumes that they're happily married and live a very good life, while in reality, they have a lot of problems. The problems start with Aniroot, the husband who is a player and has a lot of mistresses. His wife Wiganda is a smart woman who endures his misbehavior and his many women. Among his women, there is only Ornin who seems to openly come in between the couple without shame. Mia Luang literally means Main Wife, while his mistresses are called Mia Noi, literally Small Wife or Minor Wife, in Thai.

The rivalry between two famous actresses begins when the seemingly perfect married life of Phatchanin turns into a bitter pill. Ingdao seeks revenge, aiming to shatter Phatchanin’s life over an old grudge. But the game doesn’t involve only them—an ambitious businessman with his own vendetta enters the scene, stirring emotions and complicating the stakes, along with a resilient girl nearly led astray by a revenge she didn’t cause.

In the end, who will win this game of deception?