After the fight with Poong Cha, they discover that someone was using Poong Cha's name to con Jung Tae. Poong Cha then ask them to join Do Bi Gang and work for him work. Later, Jung Tae's sister collapse and was saved by Jung Tae's father. Jung Tae in need of money, goes to jump from 30 meters bridge at Yalu River to joint the Do Bi Nori (Train jumpers). (thetvdb.com)