📞 On the Line (2021) (한글: 보이스) is a thrilling Korean crime-action film directed by Kim Gok & Kim Sun, starring Byun Yo-han and Kim Mu-yeol. After his family falls victim to voice-phishing, former detective Seo‑joon infiltrates the scammers’ call center in China to recover their lost money and bring the masterminds to justice .
Featuring intense cat-and-mouse sequences, emotional stakes, and a topical look at modern telefraud, the film grossed a strong US $11.87M in South Korea—becoming the fourth highest-grossing local film of 2021 .
🎬 Stream now with full English subtitles – free and online!
✔️ Genre: Crime | Action | Thriller ✔️ Language: Korean (English Subtitles) ✔️ Streaming: Free with Ads | Full-Length Movie
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Why Watch “On the Line”?
Hot-button issue: In‑depth depiction of organized voice-phishing operations with realism and impact
Strong lead performances: Byun Yo‑han carries the emotional and action weight, while Kim Mu‑yeol excels as the criminal mastermind
Commercial success: Box office hit with over 1.4 million admissions and #1 rank for 2 consecutive weeks
Balanced pacing: First half maintains gripping realism and tension—it falters a bit in the second, but keeps delivering goal-driven narrative
