A modern reader accidentally travels into a story text, becoming the vicious supporting actress with a tragic fate in the setting. Bound by a system, she needs to complete specific behavioral tasks, or else she will suffer harsh punishments. Making clever use of the loopholes in the rules, she tries her best not to hurt others, frequently staging contrast-filled antics. Prince Heng, Xiao Jingheng, sees through the anomaly and chooses to grant trust. Together, everyone explores layer by layer, uncovering the tricks of the destiny ledger and long-sealed past events, jointly fighting against the existence manipulating behind the scenes, breaking free from the predetermined ending already choreographed, and holding the marriage contract in her hand, the heroine finally grasps the right to choose her own life.