At the start of Badarn Jai, our pra’ek Sakkarn dons the asian mullet, isolates himself from the world, and scares his family with his erratic behaviors. Sakkarn is heartbroken and deeply depressed over the death of his fiancee, Aeuy. His mother is deeply worried and asked advice from a longtime friend who has a daughter.

Seeing that the only way to heal her son’s sorrowful state is to find him a new love, she arranges a marriage between Sakkarn and her friend’s daughter, Purimarn. In order to coerce her son into marriage, Sakkarn fakes an illness.

The couple marry. They move into Sakkarn’s house and sleep in different rooms. Purimarn works really hard to please Sakkarn. She tries to brighten up his life by adding flowers into his home and being really lively. He likes her company but pretends to hate her.

Shortly after Sakkarn and Purimarn’s wedding, Aeuy’s sister comes back to Thailand. Ransitha looks exactly like her sister Aeuy. For years, Ransitha secretly pined over Sakkarn but kept her feelings dormant because Sakkarn was dating her sister.

After the death of her sister Aeuy, she saw an opportunity to be with Sakkarn. Ransitha starts mingling into Sakkarn and Purimarn’s life in order to break them up.