9.091 minSeason 1 • Episode 8
LatestA high school beside the apartment welcomes six transfer students! Both the actual incident and the scale of the episode are on another level! A group of boys fight over a girl in front of the new students. As strange events occur throughout the high school in 2003, they must find the hidden evidence and unveil the truth! Will the six students be able to uncover the hidden secret of the school?
Unprecedented real incidents that took place in Korean apartments! And six residents uncovering the mysteries of the apartment! The year changes with every episode. The cast directly faces incidents that happened in each era and solves the “secret of the apartment.” Who will become the main character to uncover the hidden secret? A variety show full of fantastic chemistry and real laughter, based on real apartment incidents, a time-and-space transcending true story chase drama.
Acting
Yoo Jae-suk's terrified reactions to fake blood are Emmy-worthy
Production
Insane period detail—each era's apartment is a character
Writing
Real unsolved cases twisted into playable mysteries
Creator
Jung Chul-min
Trivia, insights & behind the scenes
The 1987 apartment set reused props from the actual drama Reply 1988, creating accidental crossover lore for Korean TV nerds.
Each case pulls from real Korean apartment mysteries—like the infamous 'frog boys' disappearance—that remain culturally raw, making the comedy-drama balance genuinely controversial among older viewers.
KR
