There are the reincarnated princess Nalan Liuli from the Fire Star, the gentle and elegant military advisor Mo Yatian, the unrestrained and unrestrained general Xiao Yuan, and the charming and affectionate demon son Mo Aoling. When the demon king awakens and the war between humans and demons comes, how will the four of them work together to smooth out the war and restore peace to the world? Endless regret creates rebirth. Curse, suspicion, care, deception, forgetfulness, when thousands of factors gather together, what kind of hardships will the four people face? Is it possible to win someone's heart in troubled times? When the unchanging sincerity is exchanged for betrayal, should you let go or hold on tightly?