In the late 20th century, Chinese mushroom expert Li Changhuan brought cultivation technology to the South Pacific to combat local poverty. Despite tough conditions, he set up basic shelters and developed dry rice techniques, significantly improving the lives of the local people through successful mushroom cultivation.
Childhood friends Chen Ke Hai and Fang Li went their separate ways and found themselves in the No. 76 secret service. In 1939, the Bureau of Investigation and Statistics created a special class to combat the No. 76 of Wang Jing Wei's regime, with the hope of resisting Japan. Chen Ke Hai, now a secret member of the Communist Party, returns to Shanghai with the mission of infiltrating No. 76, where Fang Li is the leader. The brutal experiments reveal the truth about the bureau. Chen and Fang are separated after a failed assassination attempt. Facing a drastically different Chen Ke Hai, Fang Li tests him and places an agent at his side. Chen Ke Hai struggles to convey valuable information to his party without backing down. After the war, the former colleagues have a final confrontation over their contrasting beliefs.
Fire chief Song Yan and emergency doctor Xu Qin were separated by family opposition when they were younger. Now ten years later, they meet again due to their professions. After experiencing life and death together, they manage to find their way back, working together and encouraging each other. They acknowledge each other's individual growth after years apart, but will they be able to overcome the obstacles in their path this time to stay together?
During the period of the Republic of China, Ding Yun Qi, a talented and kind-hearted man, accidentally discovers the secrets of Kunlun Ruins while investigating his brother's bizarre disappearance. As a result, he gets involved in a conspiracy plan by warlord Luo Yun Song, who resells cultural relics, in an attempt to seize the treasures of Kunlun Ruins.
Yan Poyue, a high school student who comes from a family of soldiers. He forgoes the university entrance examinations and joins the armed police force in order to prove his worth to his father.