Deokhye, daughter of King Go Jong, was the last princess of Korea at the turn of the 20th century. Under Japanese colonial rule, she is taken to Japan as a hostage. Her father attempted to keep her safe by having her secretly engaged, but due to the king’s sudden death, she was forced to relocate to Japan when she was only thirteen, and was then married off to a Japanese nobleman at the age of nineteen. With the era's harsh conditions, she struggles to maintain the hope of the Korean people. Jang-Han is a fighter for Korean independence whose mission is to bring Princess Deokhye back to South Korea and he also loves her.