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.
Ji Chang-wook
Won Jin-ah
Yoon Se-a
Im Won-hee
Kim Won-hae
Kil Hae-yeon
Shim Hyung-tak
Seo Jeong-yeon
