Playing one character is a job. Playing three in a single project — with each hiding secrets from the others — is a genuine test. That’s the challenge Jung Chaeyeon has signed up for in “M: Reboot,” and the newly shared script reading photos suggest she’s already deep into the process.
A remake of MBC’s cult hit “M,” the horror thriller centers on Marie, a promising ballerina whose body becomes host to a mysterious personality known only as “M,” and Ji Seok, a detective drawn into an eerie mystery involving an unexplained green glow.
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A Career First for Jung Chaeyeon
Jung Chaeyeon will play three distinct characters — Marie, Jenny (a genius surgeon from the U.S.), and M herself — marking the first time she’s taken on multiple roles in one project since her debut. Marie, raised by a strict politician father and an obsessive mother, unravels after a mysterious personality awakens inside her right before a career-defining ballet audition.
The actress called it a chance to grow through a genuinely new challenge, saying she’s curious to discover new sides of herself through the role.

| Detail | Info |
|---|---|
| Title | M: Reboot |
| Based on | MBC’s original drama “M” |
| Jung Chaeyeon’s roles | Marie, Jenny, and M (three characters) |
| Jung Gun Joo’s role | Detective Ji Seok |
| Platform | TVING |
| Premiere | 2027 |
Jung Gun Joo’s Detective Debut
Jung Gun Joo steps into his first-ever detective role as Ji Seok, an ace investigator forced to confront a haunting memory from ten years ago every time the mysterious green glow reappears. He shared his excitement about introducing audiences to the character, calling the preparation process both challenging and rewarding.
For more on the psychological horror genre this remake draws from, Wikipedia’s overview of psychological horror offers useful background. For more K-drama casting and script-reading updates, visit our entertainment section.
FAQs
When does M: Reboot premiere?
The drama is set to release on TVING sometime in 2027.
How many characters does Jung Chaeyeon play?
She plays three — Marie, Jenny, and the mysterious personality M — marking a first in her career.





