Luo Jia (Li Guangjie), a mysterious man with multiple identities, appeared in Lankupa City, Kan Country, for the sake of brotherhood, and joined the Southeast Asian gang Qixing Society alone. He was in crisis but was not afraid of evil forces. Under various extreme challenges, he still adhered to justice and sought the truth. Bai Zhenhe (Yuan Wenkang), a prison guard in Lankupa, was born in the private armed forces of the governor of Lankupa. After retiring, he served in Xipa Prison. Bai Zhenhe and Luo Jia met unexpectedly in Xipa Prison. After learning that Luo Jia knew his younger brother Bai Zhen, the two changed from hostility to cooperation. Under various extreme conditions, Bai Zhenhe and Luo Jia's bond became deeper and deeper, and they became brothers of life and death. They wandered and groped on the edge of crime and the limit of life, and made a desperate effort to break through many difficulties and keep approaching the truth. However, a series of investigations and thrilling conflicts constantly changed things. The undercurrent of foreign forces lurked in the crisis. Is love sincere? Do the brothers have their own ghosts? Constant suspicion and trials have trapped the protagonist in a tight siege. "The strong and isolated city, living in the face of death", the truth gradually surfaced at the cost of life at any time...