Modern surgeon Shen Zhiwei accidentally travels through time to the 1970s, carrying an engagement arranged by her elders. Upon arriving at the military region, she immediately saves Lu Tingxiao, a soldier suffering from old injuries. She is determined to heal Lu Tingxiao, repay the Shen family's gratitude, and then break off the engagement and leave. However, through their time together, Lu Tingxiao is deeply captivated by her decisive and superb medical skills and resilient personality. Wang Lingyu repeatedly plots and frames her out of jealousy. After going through drill crises and pharmaceutical conspiracies, a seven-day agreement sparks emotional tug-of-war. Lu Tingxiao respects her wishes and wins over Shen Zhiwei with sincere devotion. In the end, Shen Zhiwei chooses to stay, and the two join hands, achieving fulfillment in both career and love.