Where can I watch “S Line” Season 1 Episode 4 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

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Watching earlier episodes in season 1 helps you follow the plot and character arcs leading into this episode.

Watch S Line Season 1 Episode 4 Online

“Miseong Motel” — Watch "S Line" Season 1 Episode 4 online in HD for free. Check streaming providers, cast, and episode details.

Jul 18, 2025 Season 1 Episode 4 55 min TV-MA

6.5 ★ ★ ★ ★ ★

2 votes

S Line Season 1

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Season 1 Episode 4 — Aired on Jul 18, 2025 • runs about 55 minutes.

Notable cast/guest names in this episode include Lee Soo-hyuk, ARIN, Lee Da-hee, Lee Eun-saem.

This page includes 3 official still(s) (when available) plus legal availability links.

Looking for “watch S Line Season 1 Episode 4 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

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...