1 ฤดูกาล
12 ตอน
무쇠소녀단 - Season 1 Episode 2
The members go to the swimming pool together for the first time. A special coach is invited to help with their training, and the members are tested to see their current level. Even though it was a short training, they improved a lot. After training by themselves for weeks, the members are gathered at the Jamsil Tower. They will do a vertical marathon which is going up 123 floors by stairs.
- ประเทศ : South Korea
- ประเภท : Reality
- ผู้อำนวยการ : Bang Geul-yi
- นักแสดง : Kim Dong-hyun, Seol In-a, Uie, Park Ju-hyun, Jin Seo-yeon
