Jiang Qingzhi returns to the Jiang family as the true daughter, bound to a "prosper together, suffer together" system—when she is injured, her blood relatives suffer alongside her. The fake daughter Jiang Yuxing is fiercely jealous and repeatedly plots to harm her, but fails time and again due to the system, which also drags out the truth of how they were switched years ago. A contest revolving around identity, family ties, and redemption unfolds, and in the end, grievances are settled as each walks toward her own ending.