Lin Yan, the amnesiac god of war, carries his five-year-old daughter Doudou behind his back and sells porridge to survive in a small border town. Before the bowl of hot porridge cooled down, the night owl who was his former colleague washed the porridge stall with blood. The old stall owner Ah Jiu died tragically and Doudou was kidnapped. In order to save his daughter, Lin Yan entered the old city steelworks with one sword, only to find that the man behind the scenes was his most trusted lieutenant Yin Hu - he was also the one who used his wife Shen Lan to conduct experiments. The serum awakens in Doudou's body, and her mother's heartbeat synchronizes with hers; the whole city is wanted, and her former benefactor becomes an enemy. Lin Yan was forced into a desperate situation, used blood as a contract, detonated the laboratory, and rushed out of the sea of fire with his daughter in his arms. On the street at dawn, he knelt down and kowtowed three times: to atone for his sins, to thank him for his love, and to pray for the future. After the smoke cleared, the father and daughter looked at each other and smiled in the steam rising from the new porridge stall - this time, what he spent the rest of his life fighting for was no longer a war, but a home that would never be cold.
