A hilarious romantic comedy about a young man, Jong Sung-kyu, who works as a professional stand-in for a mysterious rich boy in order to turn his life around and encounters multiple surprises.
College student Kong Xiaocan discovers that his mother, Kong Guifang, is terminally ill. Through a "life energy" exchange, she regains her youthful appearance at 20 and begins a new chapter in her life, alongside her son and young friends.
