‘Siang Plaing’ and ‘Wan Wanviwah’ have grown up in the same household but with different status. Plaing is the child of the homeowner, while Wan works in the house. Although they never want to be separated, one day, Wan tells Plaing that eventually she will have to get married. Plaing plans to find a good man for Wan to avoid her being alone. However, this plan makes Plaing realize her own feelings towards Wan. While their love grows stronger, Plaing loses her parents due to a business failure and escapes, leaving only a love letter for Wan. Later, they encounter again but Wan is engaged.

Two business heiresses from a hotel empire and from a department store dynasty, respectively, compete for a national Duty-Free bid. From the moment they meet, an undeniable attraction sparks.