Su Mu wakes up to find himself in a parallel world where everyone reaches the age of 18 is mandated to participate in a game called Space which consists of a series of deadly survival games. How will Su Mu, a former private detective, survive the very fir

After losing both her job and her work due to the schemes of the PD she worked with, Yeonwoo learns the truth and faces death from a heart attack. She thought her life was ending there, but when she opens her eyes, she finds herself back to her youngest w

Choi Jonghyuk, captain of the intellectual crime unit, loses his mother and his own life to a mysterious mastermind for digging too deeply into a case. In his last moments, Jonghyuk catches a glimpse of the man who kills him before waking up as his 17-yea