After Ye Nanshuang sacrificed herself at the wasteland frontline, she time-traveled to the Republic-era Ye family. Her adoptive mother used debts as a threat to force her into an arranged marriage with the warlord young marshal Zhan Sijue. Although her adoptive father Ye Jianguo tried to protect her, it was difficult to withstand the pressure of reality. With the composure of a battlefield medic and her portable medical kit, Ye Nanshuang regarded the crisis as an opportunity to showcase her medical skills. She was determined to face Zhan Sijue's hidden illness with professional competence, establish her footing in the Zhan family, and practice her original aspiration as a healer. How this cross-time medical breakthrough would rewrite the trajectory of fate remains to be seen.