Li Dao was drugged and accidentally entered the princess's bedroom, which tarnished his innocence and was deprived of his status and exiled to the death row camp. Awakening the enemy-killing system in a desperate situation, killing enemies and becoming stronger, and finally becoming an iron-blooded killing god. On the day he returned to the imperial capital, he was shocked to learn that the princess had secretly given birth to a daughter for him. He resolutely joined hands with the princess to help his daughter ascend to the throne and embark on the path to immortality together.