After a sensitive military operation, soldier Si-jin meets a beautiful surgeon named Mo-yeon and both sense a connection between each other.

After a dangerous mission overseas, Si-jin is back home and meets Mo-yeon again after their failed first date.

Mo-yeon and her colleagues join Si-jin and Alpha Team in Urk. Meanwhile Myuung-ju talks to her father about Dae-young.

A heated standoff ensues when Mo-yeon tries to save the V.I.P. Meanwhile, Dae-yong and Myeong-joo run into each other at the airport.

Mo-yeon is confused after her first kiss from Si-jin and then a disturbing phone call.

The medical team prepares to leave Uruk, but a natural disaster hits first.

The rescue team and doctors work to excavate and save survivors from the wreckage.

Dae Young and Shi Jin find a man trapped in the destroyed power plant, but Yeong Su is determined to make his way inside no matter the danger.

Chi Hoon struggles to cope with his guilt. Commander Yoon visits the camp.

Shi Jin is ordered to allow Argus to operate. Yeong Su's plan to keep the diamonds safe backfires.

The M3 patients are isolated in the Medicube's ICU. Myung Joo takes a turn for the worse.

Commander Yoon defends Shi Jin's unauthorized mission to his superiors. The medical team looks forward to returning to Korea.

Mo Yeon's plan of opening a clinic hits a snag. Alpha Team is sent on leave, but is called for a mission.

The other victim of the gunfight will affect relations with North Korea, but Shi Jin decides to help him.

Alpha Team is sent on a three-month long operation. Commander Yoon asks Myung Joo to forgive him for treating Dae Young unfairly.