Kate Sanders, who makes a living by selling tofu in the countryside, ventures into the city to attend the engagement party of her son Zack Sanders, the CEO of Sanders Corp. However, due to her youthful appearance, she is mistakenly identified by her future daughter-in-law, Chloe Anderson, as Zack's mistress. Knowing that Chloe is carrying Zack's child, Kate decides to give Chloe another chance to change her ways and hope for her redemption. Yet Chloe remains unrepentant and continues her behavior, ultimately disappointing Kate deeply. Meanwhile, Zack gradually uncovers the truth about his mother's mistreatment at Chloe's hands. Eventually, Chloe learns of Kate's true identity and is filled with regret. Her dreams of becoming the CEO's wife shatter, leading to a tragic ending.
