Cheewan and Poncheewa, the bright and beautiful Dhevaprom cousins, share a sister-like bond and do everything together—including studying in Switzerland. Their lives take a romantic turn when they meet M.L. Saruj Juthathep, the charming First Secretary at the Thai Embassy in Bern, who is responsible for supporting Thai students abroad.

What begins as an ideal backdrop for a love story soon turns complicated. Cheewan, tasked with playing matchmaker for Poncheewa and Saruj, unexpectedly falls for him herself. As hidden feelings, jealousy, and misunderstandings grow, the once unshakable bond between the cousins begins to crack.

Now Cheewan faces an impossible choice: follow her heart and risk losing her cousin, or stay loyal and bury her feelings. Meanwhile, Saruj must confront his own heart—who does he truly love?