He lost everything his company, his family, even his name. But when she needed him most, he returned as a man reborn.
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Jack Lee once stood at the pinnacle of power, leading the globe’s most formidable defense empire. But no amount of wealth could prepare him for what came next: betrayal by the one person he trusted most his own son. Cast out of his mansion and erased from his family’s life, Jack disappears from headlines… and reappears pushing a janitor’s cart at a private school.
To the world, he’s just the quiet man sweeping hallways. But behind his silence lies a lifetime of power, heartbreak, and hidden brilliance. When he rescues a student from danger, he crosses paths with Emma Choi the school’s cold and stoic headmistress. Under siege by enemies and facing public humiliation, Emma has no one left to trust.
Until Jack offers a way out: a contract marriage.
What begins as a strategic alliance turns into something neither of them expected comfort, protection, and an unspoken bond built on mutual wounds. As school politics erupt and bankruptcy looms, Jack steps out of the shadows.
His identity? The world’s richest man.
His motive? To save the woman who saw him before the world did.
The Billionaire Janitor Is Back is a powerful story of emotional rebirth, hidden legacies, and the kind of love that doesn’t arrive loud but never leaves quietly.
Written by: Seo Min-jung
Renowned for creating characters who suffer in silence before rising with purpose, Seo Min-jung weaves pain, power, and passion into every episode.
Ji Sung as Jack Lee – a forgotten tycoon with a secret to protect
Kim Hee-sun as Emma Choi – a headmistress fighting to keep her legacy intact
Kim Young-dae as Dean Park – the power-hungry saboteur
Roh Jeong-eui as So-young – the spark who changes everything
Supporting roles:
Choi Min, Shin Dong-mi, Kim Mi-kyung, Seo Ye-hwa
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, WeTV (International)
Emotional Romance / Secret Identity / Redemption Drama
16 episodes (~65 min each)
Aired on: DramaBox (South Korea)
Streamed on: Viki, WeTV, iQIYI
Airing Period: June 14 – August 2, 2025
New episodes every Friday and Saturday
Original Language: Korean
Subtitles available in: English, Spanish, Portuguese, Indonesian, Tagalog, Turkish, French
A haunting and emotionally rich soundtrack supports every twist:
🎧 “Room 102” – Roy Kim
🎧 “Let Me Forget You” – BIBI
🎧 “Even the Quiet Cry” – Heize
🎧 “Legacy in Silence” – Instrumental by Nam Hye-seung
🏅 Best Drama Nominee – Korea Drama Awards 2025
🥇 Ji Sung nominated for Outstanding Lead Actor
🎼 Roy Kim’s “Room 102” nominated for Best OST Ballad
🖋️ Screenplay received special mention for narrative depth by the Seoul Critics Circle
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