Online fashion model Hyo-jeong faces imminent threat of being unemployed because of the younger and more fashionable generation coming after her. While relying on surgical procedures and treatments, Hyo-jeong hears about a mysterious yoga class that helps make perfect body shape from her old high school classmate, Ga-yeong. Hyo-jeong eventually attends the yoga class with three classmates: Mi-yeon, a boxer who failed to keep her body fit, Ji-won, who has unstable mental condition, and Ye-na, a movie star who is morbidly obsessed with her appearance. Meanwhile, police start to investigate the enigma behind this yoga class after finding out that a murder in the neighborhood was committed by a woman named Bo-ra, a former yoga class student.
| Directing | Kim Ji-han | Director |
| Directing | Juhn Jai-hong | Director |
| Writing | Juhn Jai-hong | Screenplay |
| Production | Lee Tae-hun | Executive Producer |
| Editing | Jung Jin-hee | Editor |
| Art | Park Young-chan | Production Design |
| Sound | Lee Seung-yeop | Sound Supervisor |
| Camera | Lee Du-hoon | Director of Photography |
| Visual Effects | Jeon Gun-ik | Special Effects Supervisor |
| Production | Kim Yong-sun | Producer |
| Editing | Kim Ji-min | Digital Intermediate |
| Sound | Park In-young | Original Music Composer |
| Lighting | Kim Tae-hun | Lighting Director |
| Editing | Lee Eun-song | Digital Intermediate |
| Costume & Make-Up | Lee Yun-jeong | Costume Design |
| Visual Effects | Song Seung-whan | VFX Supervisor |
| Production | Lee Young-min | Executive Producer |