Ma Dong-chan (played by Ji Chang-wook) is an accomplished producing director. His latest project is the Frozen Human Project and he takes part in it as well as one of the participants. Together with Go Mi-ran (played by Won Jin-ah), Ma Dong-chan enters the frozen capsule for 24 hours. Due to an unexpected accident, the capsule disappears along with Professor Hwang who is in charge of this research. 20 years went by, when Ma Dong-chan and Go Mi-ran wake up from the capsule, everyone else around them has aged by 20 years except them. Ma Dong-chan's girlfriend, Na Ha-yeong (played by Yoon Se-ah) has become the newsroom director. She firmly believes that the accident that took place 20 years ago is deliberate....

The show tells of the four different romantic stories of four charismatic men in their journeys through love and separation, success and frustration....

Living in a Korean upper-class community called Sky Castle, a group of rich women attempts to support their husbands in their careers and turn their children into the second generation of the elite....

It tells the story about ugly desires and secrets, as well as evil conscience and rescue in "Royal The Hill", where only 1% of the upper-class people in South Korea live....