2x5 - Missing: The Other Side

The Goliath is about to make a huge drug deal. Just before the exchange is made, Gwang Taek finds out that Sang Chul is an informant for the police and kills him. He also finds out that Se Young is still alive and tries to find her to cut loose ends. As Sang Chul wakes up at Industrial Complex Three, Wook investigates him to find Se Young before she gets killed.