The four interns at Yongcheonru—Prince Lee Eun (Bae In-hyuk), Hong Deok-soo (Kim Ji-eun), Cheon Jun-hwa (Jung Gun-joo), and Go Soo-ra (Park Jae-chan)—confront their deepest secrets and ambitions. As political tensions peak, Lee Eun's concealed royal identity faces exposure, while Deok-soo's disguise as a man is jeopardized. Jun-hwa grapples with his destiny as the inn's heir, and Soo-ra strives to restore his family's honor.