The journey to become the real Iron Girls begins now! 9.00/10 2025-07-18 48 minutes.HDThe 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.An: 2025Studio: tvNPays: South Korea