This article tells the story of an ordinary urban white-collar worker who accidentally returned to high school, passed the military academy, entered the military camp, and participated in the plot of a soldier's assault. The heroine Xia Jun was originally a cheerful girl, but then the sudden changes in time and space made her character become cold, but she was not indifferent. The passionate military camp gradually calmed her inner uneasiness, integrating her heart into this green era, and gaining family, friendship, comrades-in-arms and her love.