Jin Seo Yeon, Uie, Park Ju Hyun, and Seol In Ah will participate in the triathlon for the first time. The members like to work out, and they are somewhat confident about their physical abilities. However, triathlon is a sport that is on another level, and it makes the members nervous and worried. Kim Dong Hyun is here to help the team as their captain and trainer. Stay tuned to check out!
