Sattawat, a doctor, is forced into an arranged marriage with Anusaniya to pay off his mother's gambling debt to Anusaniya's wealthy family. Anusaniya agrees to the marriage to shut down her half-uncle Chayakorn's romantic advances. Meanwhile, Somika, Chayakorn's ex, falls for Sattawat — only to discover he's married to her rival, Anusaniya. Fueled by jealousy, Somika schemes to tear them apart.