Ma Dong-chan and Go Mi-ran are both frozen during an experiment. They wake up 20 years later instead of 24 hours later and must keep their body temperature above 30°C in order to survive.
as Ma Dong-chan
as Go Mi-ran
as Na Ha-yeong
as Son Hyun-ki
as Ma Dong-sik
as Mi-ran's mother
as Hwang Byeong-sim
as Oh Young-sun
as Ma Dong-joo
as Hwang Ji-hoon
as Tarry
as Go Nam-Tae
as Park Yoo-Ja
