Lady Pin, an orphaned noblewoman, is taken in by her strict but loving aunt at the Savettawarit Grand Palace, where she forms a deep bond with the mischievous Princess Anil.

Lady Pin struggles with the impending departure of Princess Anil, who is set to study abroad, leaving Pin feeling lonely and heartbroken.

Princess Anil returns home after years abroad, rekindling her bond with Lady Pin. However, new relationships and old insecurities threaten their friendship.