Harassed relentlessly by her peers and finding no solace, Moon Dong-eun descends into a profound despair, ultimately resolving on a new purpose for her existence.

As Park Yeon-jin's wedding drew nearer, Dong-eun's carefully orchestrated revenge progressed without a hitch. Simultaneously, a chance meeting unfolded within the sterile walls of a hospital, promising unforeseen consequences.

With an amateur detective engaged, Dong-eun unearthed a series of damaging secrets, skillfully employing them to advance her plans.

The recent past had left Yeon-jin perpetually tense, and the news only deepened her unease. Learning of her daughter’s new homeroom teacher, coupled with the sudden death of someone close to the class, sent a fresh wave of anxiety through h…

As Ha Do-yeong encounters a compelling rival, Yeon-jin discovers that her most carefully guarded secrets are vulnerable when she attempts to frighten Dong-eun.

The sudden departure of Son Myeong-o cast a pall over the close-knit group, a subtle but undeniable strain tightening their bonds. For Dong-eun, the event served as a sharp test of her faith in Kang Hyeon-nam.

Haunted by a painful history, Dong-eun confides in Joo Yeo-jeong, a man burdened by unresolved matters of his own. With this shared vulnerability, a revised strategy emerges concerning Hyeon-nam’s daughter.

Do-yeong sought out Choi Hye-jeong, hoping to glean further understanding of his wife, and the woman's history. Meanwhile, Yeon-jin delved into the hidden aspects of Dong-eun’s personal life.

Doubt centers on Myeong-o, while Dong-eun offers Yeon-jin an opportunity to finally reveal her history, and the details surrounding Yoon So-hee’s demise come to light.

Upon learning of Hyeon-nam's connection to Dong-eun, Yeon-jin issued a threat. Meanwhile, Yeo-jeong plotted a course to uncover the truth from Yeon-jin.

A damning recording surfaces on Myeong-o’s tablet for Hye-jeong to discover, while Hyeon-nam faces an unwanted guest as she finalizes arrangements for her daughter's departure overseas.

The contours of Dong-eun’s final move sharpen as she dispatches a disturbing package to Jae-jun, simultaneously weaving a scheme to dismantle both Yeon-jin and Lee Sa-ra.

While Sa-ra and Yeon-jin navigate the fallout of their tarnished reputations, Dong-eun uncovers the intricacies of Yeo-jeong's hidden difficulties.

Concern tightened around Yeon-jin and Shin Yeong-jun as they wrestled with the matter of Myeong-o. Meanwhile, Dong-eun addressed a persistent difficulty. Elsewhere, Yeon-jin’s mother plotted to neutralize a potential obstacle.

Do-yeong presented Dong-eun with an ultimatum. Meanwhile, Dong-eun pressed for a specific piece of evidence. The sudden appearance of old videos online prompted Yeon-jin to scramble for damage control.

With the last elements of her scheme coalescing, Dong-eun contemplates the unfolding consequences—and the inevitable impact on Yeo-jeong.