Son Joong-gil, the chairman of Jaekyung Group, which represented South Korea in the 1990s. He closes his eyes, and 30 years later, in 2022, he awakens in the body of his grandson, Son Jeong-hoon. The Jaekyung Group, noticeably declined compared to 30 years ago. Son Joong-gil sets out to return the group he built to its former glory.