Miniseries poster
← S Line

Miniseries

6 episodes · 11th July 2025

Hyeon-heup has been able to see the mysterious 'S lines' since birth, a secret only she could perceive. But when special glasses allow others to see it too, long-buried secrets and hidden connections surface, pulling her into a web of desire, betrayal, and dangerous truths in this haunting thriller.

Season details

Details

Episode guide

Episodes

01 The Girl With The Sunglasses still The Girl With The Sunglasses Episode 111th July 2025 Hyun-heup, a girl who was born with the ability to see the S-line that indicates sexual relations. Because of this ability, Hyun-heup's family faces tragedy, and Hyun-heup becomes a reclusive loner for a long time. Then one day, a series of suspicious murders occur around Hyun-heup, and Hyun-heup uses his ability to see the S-line to track down the case... 02 The Animal Kingdom still The Animal Kingdom Episode 211th July 2025 Hyun-heup goes to Bangju High School after receiving a mysterious text message. There, he reunites with Seon-ah, a middle school classmate and Ji-wook's niece. However, Seon-ah is a victim of bullying from bullies. One day, when the bullying from bullies reaches its peak, Seon-ah discovers a mysterious pair of glasses in her locker... 03 A Fall Into Darkness still A Fall Into Darkness Episode 318th July 2025 Seon-ah falls from the rooftop and falls into a coma. Ji-wook cries out in self-reproach and anger, and cooperates with Hyun-heup to find the culprit. Meanwhile, Jung-woo, an English teacher at Bangju High School, witnesses his girlfriend's affair before their wedding and breaks off the engagement. And soon after, he finds a pair of glasses on his desk... 04 Miseong Motel still Miseong Motel Episode 418th July 2025 Ji-wook, who was continuing the investigation to find the culprit of the Seon-ah incident, hears about the S-line from Hyun-heup, but doesn't believe it. Meanwhile, Bang Ju-goo, an employee who lives in a goshiwon and dreams of becoming an actor, finds S-line glasses at Mi-seong's house and feels liberated, but soon after, he sees a woman connected to the music teacher he had a crush on and feels strong jealousy... 05 The Glasses still The Glasses Episode 525th July 2025 Ji -wook, who finally discovered glasses in the bloody bathtub of aesthetic, admits that the words of Hyun -suk were true. Use the power of glasses to start an investigation into sexual violence in the runway. And I think that the person connected to the only one S line of Sun -ah is the culprit of the Sun -a case. 06 Chaos on the Horizon still Chaos on the Horizon Episode 625th July 2025 Ji -wook finds out the truth about Sun -ah's S -line through glasses. Meanwhile, Hyun -suk, ahead of his 18 -year -old birthday, makes a big decision and meets the Jun -sun, which leads to an unknown confusion.
Talent

Cast & Crew

01 Lee Soo-hyuk profile Lee Soo-hyukas Han Ji-wook 02 ARIN profile ARINas Shin Hyeon-heup 03 Lee Da-hee profile Lee Da-heeas Lee Gyu-jin 04 Lee Eun-saem profile Lee Eun-saemas Kang Seon-ah 05 Kim Dong-young profile Kim Dong-youngas Oh Dong-sik 06 Lee Gwang-hee profile Lee Gwang-heeas Joon-seon 07 Lee Han-joo profile Lee Han-jooas Yoon Ji-na 08 Woo Ji-hyun profile Woo Ji-hyunas Jung-woo 09 Nam Kyu-hee profile Nam Kyu-heeas Kim Hye-yeong 10 Oh Woo-ri profile Oh Woo-rias Lee Kyung-jin 11 Oh Seung-jun profile Oh Seung-junas Lee Ji-won 12 Kim So-young profile Kim So-youngas Choi I-seo 13 Ahn Joo-Young profile Ahn Joo-YoungDirector / Creator
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