“Laorchan”, the only daughter of “Pheerapong”, who graduated in the arts from France and returns to Bangkok after knowing that “Prince Satratsami” of Wiang Phu Kham is bringing a precious treasure, the “Third Eye Sapphire,” to be displayed at the JT Center department store. “Laorchan” disguises herself as a secretary and applies to work for “Phuthanet Juthathep”, the son of “Ratchanon” and “Soifah”, who serves as the managing director of the department store. Her goal is to get close to “Phuthanet” in hopes of stealing the precious necklace.