Panat, the eldest son of Preemsuda and secretary to government official Peeradate, secretly marries Piraya in Spain. Upon their return, Panat’s younger brother, Pasin, falls for Piraya’s sister, Pasika. Panat hides a dark secret that shatters both couples' relationships, leading to turmoil. Piraya's mother falls ill, and Piraya separates from Panat, who leaves to study abroad. Years later, Panat returns as a doctor and gets engaged to Wasitha, only for Piraya to
