Miles separated Lee Eun-bi and Ko Eun-byeol, two high school girls whose lives unfolded in strikingly different ways. And yet, a peculiar likeness bound them together, a resemblance that seemed almost uncanny.

Ten days of desperate searching culminated in a phone call from the hospital. The news delivered was a chilling blow: Eun-byeol had no memory of the events that had transpired.

Yeong-eun’s mother insists on a thorough investigation into the recent events and the accusations of bullying. However, the matter is made difficult by Eun-byeol’s memory loss.

Driven by a desperate need to understand what had occurred, Eun-bi sought answers about her daughter, Eun-byeol. A letter discovered in Eun-byeol’s room spurred her mother into immediate action; she hurried to the House of Love.

Eun-bi’s already perplexing existence becomes even more tangled with the arrival of a new student, one who persistently seeks inclusion in her circle of friends.

So-yeong plotted against Eun-bi with unwavering persistence. Meanwhile, Tae-gwang feigned indifference, though a quiet anxiety shadowed his concern for Eun-byeol.

A resolve hardened within Eun-bi: she would emulate Eun-byeol, and confront So-yeong. I-an offered his assistance, yet she found herself unable to confide in him.

A troubling pattern emerged in Eun-bi’s classroom: three groups failed to submit their projects, each victim of inexplicable computer malfunctions. A sense of unease settled over the students, and suspicion began to bloom. Eun-bi found hers…

I-an sought out Eun-byeol’s mother, hoping to understand what had occurred. In his absence, a quiet intimacy blossomed between Tae-gwang and Eun-bi.

Consumed by guilt over I-an’s injury, Eun-bi attempts to offer assistance, yet he rebuffs her efforts. Meanwhile, So-yeong seeks her mother's intervention to navigate a difficult situation.

Eun-byeol’s mother observed her daughter in a moment of confrontation with a classmate. Meanwhile, Tae-gwang made an effort to prevent Eun-bi from being compelled to transfer to a different school.

Reviewing the school’s security footage, Mr. Kim observed something deeply unsettling. Meanwhile, Tae-gwang spoke with his father about Eun-byeol’s predicament.

So-yeong made a veiled threat to expose the findings of the handwriting analysis to the entire class. Meanwhile, Tae-gwang perceived an unsettling difference in Eun-bi's demeanor.

Eun-bi exists in a liminal space, belonging fully to neither of the places she calls home. I-an harbors a complex and conflicting affection for her. Meanwhile, Tae-gwang wrestles with the implications of the autopsy report, uncertain of his…

Ian explained to Tae-gwang the true source of his anger toward Eun-bi. Meanwhile, as So-yeong worked to fix her phone, a memory surfaced: the video she had recorded previously.

With a shared decision to begin anew, Eun-bi’s family resolved to relocate. She spoke her heart to Tae-gwang and I-an, while Eun-byeol offered heartfelt farewells.