The upcoming fantasy thriller S Line just dropped its sensational trailer, showcasing the series’ striking and unique concept ahead of its July release.
Set for exclusive release on Wavve in July 2025, S Line explores a dark world where glowing red lines—dubbed the “S Line”—begin appearing between people who have had sexual relationships.
The trailer with the eerie narration, “I’ve been cursed,” as we step into the eyes of Hyun Heup (Arin), the only person born with the ability to see the S Lines. Her perspective reveals a tangled, disturbing world of connections—red threads linking heads and hearts in ways no one wants exposed.
Then comes Detective Han Ji Wook (Lee Soo Hyuk) with his shaken expression staring at a wall scrawled with red lines inside a murder suspect’s home. Then there’s the mysterious teacher Gyu Jin (Lee Da Hee), Hyun Heup’s homeroom teacher—who, unlike everyone else, doesn’t have a single red line visible above her head.
Accompanied by the tagline “truths you want to hide revealed above your head,” Ji Wook’s cryptic line—”It changed after putting on these glasses”—amplifies questions about the relationship between S Lines and the glasses. As Gyu Jin muses, “To some, it’ll become a weakness they can’t hide. And others will use it,” the story unfolds into a twisted web of secrets, control, and carnal temptation.
Based on the hit webtoon by Kkomabi—also known for A Killer Paradox—S Line is already generating global buzz. The series was officially invited to compete at the 8th Cannes International Series Festival and made history as the first Korean series to win Best Original Music at the event.
With its bold concept, stunning visuals, and star-studded cast including Lee Soo Hyuk, Lee Da Hee, Arin, and Lee Eun Saem, S Line will have its exclusive release in July on Wavve.
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Source: Wavve
