Uee, Park Ju-Hyun, Seol In-ah, and new member Geum Sae-Rok take on a new physical and emotional challenge: boxing. After conquering a triathlon in season 1, the cast returns under the guidance of MMA fighter Kim Dong-Hyun to face grueling training, mental hurdles, and personal growth inside the ring, showcasing the strength and resilience of women stepping far outside their comfort zones.