Xiang Yuan, the daughter of Donghe Group's president, assumes the role to save the branch in Xi'an from bankruptcy, where her trial begins. Xiang met Xu Yanshi, a handsome boy she chased but failed on campus. Xu insisted on his dream of becoming a navigation engineer, despite the injustice in the workplace. Gradually, Xiang grows independent and capable while dealing with the company crisis. They two support each other, and once again the spark of love between them is ignited. Together, they set on the journey of China Beidou navigation system's research....

In 1944, during the war of resistance between the Kuomintang and the Communist Party, the Kuomintang captain Mu Liang Feng, who was a hunter, was ordered to lead a special team to destroy the secret weapon research institute of the Japanese army that developed cyanate grenades. With the help of Zhang Jue and Liu Xiao Xian, members of the underground party of the Communist Party of China, he has gone through many difficulties and dangers to complete the task. But during this period, his father, Mu Da Ming, who was a staunch Communist, was killed, and his wife, Liu Yan, was also persecuted and lost her memory. The deeply stimulated Mu Liang Feng arbitrarily believed that the Communist Party caused all this, and began to hate the Communist Party......