The Palaces weaves together three interconnected stories of love, chance encounters, and personal dreams. After a painful breakup leaves aspiring actor Mo-beom with no memory of the previous night, he unexpectedly reunites with an ex at Deoksugung Palace. Meanwhile, Chloe, a Korean-French traveler with a passion for film photography, explores Gyeongbokgung alongside a newfound companion. At Changdeokgung, a struggling film student facing an uncertain future decides to create what may be his final movie.
| Actor | Role |
|---|---|
 Kim Mo-beomMo-beom | Mo-beom |
| NNam So-hyeonSeul-bi | Seul-bi |
 Yoon Hye-reeHee-jung | Hee-jung |
| LLee Sung-wooJung-nam | Jung-nam |
| JJang Hyun-sukHyun-suk | Hyun-suk |
| SShin JiyaChloe | Chloe |