While complaining about a web novel, Yun Qing and her best friend Qin Huanyan are unexpectedly transported into the book after a power bank explodes. They become, respectively, a cannon-fodder concubine who elopes through a dog hole on her wedding night and a spoiled, arrogant commandery princess destined for a tragic ending. Bound to a cannon-fodder survival system, the two must win the favor of designated male leads to change their predetermined deaths. If they seriously deviate from their assigned personalities, they will be punished. Yun Qing must win over the cold and calculating Prince of Nan'an, Qin Yanli, while Qin Huanyan must face Yu Jinnian, a delicate and possessive hostage prince who will eventually turn dark and seek revenge. Standing together through countless household and palace intrigues, they fight against the schemes of the original heroine, Yun Zhao, and others, determined to rewrite their tragic destinies.