Bunga, a half-Thai Chinese-Malay orphan, lives a quiet life with her grandmother Kimluan in the South, making ends meet by tapping rubber. But when deceitful Boss Wieng tricks Kimluan into a loan using Bunga as collateral, Bunga is nearly forced to become his mistress.

She escapes and boards a train to Pattani, where she meets her first love, Tawan. Just as love begins to bloom, tragedy strikes — Kimluan falls ill, and as Bunga and Tawan rush home, Wieng gives chase. In the chaos, Bunga is lost at sea during a storm, and the lovers are torn apart.

Fate reunites them later — but Bunga has no memory of Tawan and is now engaged to another man. Can love survive when the heart forgets?