The heroine Lin Wanxing (21 years old) is a graduate student at the National University of Defense Technology in 2024. She accidentally traveled to 1982 during a military exercise and became the 19-year-old military subordinate Lin Wanxing of the same name. She relied on modern knowledge to shine in difficult times. She married and then fell in love with the cold-faced officer Gu Zhenguo (25 years old). They grew up together and witnessed and participated in the modernization of national defense.
