Por and Kaew are lovers who are about to get married. Then, tragedy strikes. Por’s older sister, Putt, murders Kaew’s older sister, King, because she believes her sister and her husband are having an affair. Naturally, after the killing, Kaew forces herself to break up with Por. There is a time jump of six years. During those six years, Kaew stayed in Rayong with her mother and brother, Kong, in their father's beach house. Por has become a successful businessman and moves to Hong Kong to manage a company branch there. However, they both are reunited again after Kaew moves her family back to the city (to treat her mother's medical condition) and Por returns back to the company in Thailand to be with his beloved niece, nu Nim. Under various events, Kaew ends up working as Por's personal assistant and encounters Por's girlfriend, Awn. Pueng is Kaew's best friend and also works in Por's company. She likes a co-worker named Nuthi, but Nuthi is instantly interested in Kaew upon seeing her for the first time. Por is enraged with his past girlfriend/fiancee's relationship with a younger man, but at the same time, he cannot endure the hurt and pain that Awn, Putt and Pipat put Kaew through and vows to protect her, the only woman he's ever loved.