Contains spoilers for this episode and earlier episodes.
Mo-yeon answers Shi-jin's question by admitting how strongly she is drawn to him and how much his dangerous work frightens her. She asks him to apologize for the kiss, and he accepts her decision before returning to Korea. His father is disappointed about the lost promotion, but understands the principles behind his choice. Shi-jin reunites with Dae-young, whose harsh training has left them both with angry soldiers to evade during a night out. In Uruk, Mo-yeon prepares to leave with the medical team while reminders of Shi-jin make the departure difficult. Myung-joo keeps reaching for Dae-young, who finally answers a call.
The expected return home is interrupted by an earthquake that devastates Uruk. Mo-yeon and the doctors already travelling toward the airport insist on going back to help their colleagues and the people injured in the disaster. At the damaged power plant, the team faces collapsed buildings and more patients than it can easily treat. They begin sorting casualties and working with the equipment available. News of the earthquake sends Shi-jin and Dae-young back with the relief force. Each man searches for the woman he left behind. Their reunions are brief, but Shi-jin pauses to tie Mo-yeon's boots before they return to their separate tasks.