The Loyal Pin

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.

Princess Anil, uncertain about Lady Pin's feelings, hatches a plan to get closer to Lady Uangfah in order to test Pin's emotions. As expected, Pin becomes irritated and upset with Anil, though she conceals it.

Lady Pin distances herself from Princess Anil following a significant event. Later, Anil confesses her love and gifts Pin a gold hairpin.

Princess Anil and Lady Pin's blossoming romance at the Pine Palace faces a challenge as Anil must leave again for her studies abroad.

Lady Pin wakes from a nightmare to find Princess Anil by her side. They share a final night before Anil's departure. Despite her resolve, Pin hides to say goodbye. Anil reconnects with childhood friend Lady Aon abroad.

After returning from abroad, Princess Anil is celebrated for graduating early. Jealous of Lady Pin, she drinks too much and gets drunk. Pin takes her home, and Anil kisses her, unaware that they are being watched by someone.

During a beach trip, Mr. Kueakiat tries to woo Lady Pin, who avoids him. After saving Lady Aon from drowning, Princess Anil secretly gives Pin a diamond ring, sparking Kueakiat's curiosity.

Mr. Kueakiat hurries to approach Princess Patthamika after noticing the ring on Lady Pin's finger, which raises her suspicions. Meanwhile, Princess Anil needs to prepare for her master's degree studies as decided by Prince Anan

Princess Anil, Lady Pin and others travel to attend a royal banquet. Lady Uangfah confesses her forbidden love to Anil. Pin performs a dance with Uangfah, then secretly meets Anil, giving her a ring and a kiss.