Description：Kim Hyo-jin (played by Yoo Jin), a female TV shopping host, is in a dilemma in life: the younger generation is both youthful and beautiful, and has an overwhelming momentum; her boyfriend is a useless film director and is of no use at all. At a gathering of old friends, the ugly duckling Sunhwa (played by Lee Young-jin), who was ridiculed at the time, turned out to be a peerless beauty, which surprised Hyo-jin and her friends. Facing a crisis in her career, Hyo-jin turned to Sunhwa for beauty secrets. Under Sunhwa's guidance, she came to the yoga academy run by Jian Meixi to apply for a week of intensive training. Hyo-jin, Sang Yeon-joo, Lee Bora and four other girls entered the academy together. They were required to strictly abide by the various strange rules here and cut off all contact with the outside world. In the following week, they each underwent devilish training for the ideal beauty in their hearts, but had to face the terrifying darkness.