While reality divides them, social status is erased by social media, where they can lie to their hearts' content.

"Wife on Duty" is about two people - Tomorn (Warit Sirisantana), the heir to a mining fortune, and Tawan (Rinrada Kaewbuasai), a maid - united by their love for drama series on TV and social media. In the real world, Tomorn had been committed to an arranged marriage to Yardfah, but she has dedicated herself to another man. Yardfah's mother has sold the engagement ring given by Tomorn's family, so they plan to deceive him by asking their maid (Tawan) to step in as Yardfah and marry Tomorn. Tawan's world of social media and real-life is about to collide in this romantic comedy.