He vanished from the boardroom. She buried her heart in rules. What brought them together wasn’t love it was survival.
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Jack Lee once commanded entire industries. With a signature, he moved markets. With a glance, he silenced rooms. But when he walked away from his empire to become a present father, he was betrayed not by enemies, but by blood. His own son cast him aside, trading legacy for comfort.
Homeless and nameless, Jack takes the lowest job possible: janitor at an elite private school. He has no plans to be noticed until the day he rescues a student in danger. That moment changes everything.
Enter Emma Choi, the headmistress known for her discipline and cold heart. As enemies conspire to remove her, she needs protection. Jack needs a cover. What begins as a contract marriage turns into an unlikely alliance — and something far more dangerous.
As Jack silently watches the institution crumble, he begins to rebuild it not with brooms, but with strategy, resilience… and eventually, billions. Just when Emma faces public disgrace, he steps in with a gesture so grand, it shakes the nation: the humble janitor is, in fact, the richest man alive.
The Billionaire Janitor Is Back is a powerful tale of second chances, hidden strength, and the quiet storms we never see coming.
Written by: Seo Min-jung
Celebrated for her rich characters and quiet tension, Seo Min-jung crafts another unforgettable drama that proves emotional power doesn’t always speak loudly — but it always hits hard.
Ji Sung as Jack Lee – the billionaire with a hidden past
Kim Hee-sun as Emma Choi – the headmistress guarding her school and her heart
Kim Young-dae as Dean Park – the master manipulator within the school
Roh Jeong-eui as So-young – the student whose rescue changes fate
Supporting roles:
Shin Dong-mi, Lee Jun-hyeok, Yoo Seung-ho, Bae Hae-sun
Directors: Jang Mi-yeon (Second Love), Han Do-yoon (Echoes of Us)
Executive Producer: Hwang Jae-ho
Production Company: Studio Bloom
Distributors: DramaBox (Korea), Viki (Global)
Emotional Romance / Power & Redemption
16 episodes (~65 minutes each)
Aired on: DramaBox (South Korea)
Streamed on: Viki, WeTV, iQIYI
Airing Period: June 14 – August 2, 2025
Episodes released every Friday and Saturday
Original Language: Korean
Subtitles in: English, Spanish, Portuguese, Tagalog, Indonesian, Vietnamese, French, German
Powerful ballads and haunting melodies mark this unforgettable score:
🎧 “Your Silence Is Louder (Whisper Ver.)” – 10cm
🎧 “Echo in the Halls” – Sunwoo Jung-a
🎧 “I Don’t Remember Saying Goodbye” – Gaho
🎧 “Shadows Return” – Instrumental by Nam Hye-seung
🏅 Best Actor Nominee – Ji Sung (Korea Drama Awards)
🎼 Best OST Nominee – Mnet Music Awards
🖋️ Nominated for Best Original Screenplay – Seoul TV Writers Guild
🔥 Fan Choice Award – Most Shocking Identity Reveal of 2025
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