The show will tell the story of a mysterious red line that appears above people’s heads, connecting them to those they’ve had sexual relations with. Han Ji Wook is a detective who wants to find out the truth about the mysterious red line. Kyu Jin is a quirky high school teacher and Hyun Hob is a high school student who has been able to see the red line since birth. (Source: NME Asia) Adapted from the webtoon "S Line" (S라인) by Little Bee (꼬마비).

Watch S Line (2025) Episode 4 with English subtitles

S Line Episodes

Also known as: S라인, S Rain

About S Line

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