Kill Heel Synopsis: Ok Sun visits an orphanage with her son, Jung Hyun. As she solicits a confidential request from the orphanage's director, she shows a deadly side to her character. Meanwhile, during the after-party at the location shoot, Sung Woo gets drunk and confronts Mo Ran about the accident she witnessed, and Woo Hyun gets scouted by the rival network that refused her transfer. Later, Woo Hyun approaches Mo Ran with a bold proposal.