Marriage first, love later + conspiracy counterattack; she married into the palace to find out the truth about her father's death, and he accepted this "chess piece princess" to stabilize the government. The two drew a clear line on their wedding night. The Queen Mother and other princes' spies were watching, and men in black attacked at night with murderous intent. The couple who "respected each other as ice" were forced to stay together. She used her medical skills to investigate suspicions, and he used his power to pursue the murderer. However, as they probed step by step, they were surprised to realize that their goals had already been intertwined, and that invisible barrier was being quietly broken down by the truth and tacit understanding...
