The female protagonist traveled from modern times and met the buried male protagonist. The female protagonist used the private space library to save the male protagonist's life, and even used the space library to flourish in ancient times. The heroine was afraid of being recognized and turned herself into an ugly girl. Unexpectedly, the hero discovered that the heroine was a spy sent by the enemy country and almost killed the heroine. In order to monitor the heroine, he kept her by his side. Clinker, God-given marriage, it turns out that the male and female protagonists are both suitable for underworld marriage. After many twists and turns, they finally recognized each other and spent their lives together!
