Yu-mi applies to a marine outfit to become their first female member. Finding out about their NO woman-policy, she pushes herself to the extreme and fils a petition. After overcoming many obstacles, she is finally accepted for her outstanding performance. However, conflicts never cease between sergeants and Yu-mi, who’s new to the tradition and culture of the marines. Following the sudden death of a trainee, Sergeant HA, she is appointed to the head of the team. Highly motivated Yu-mi loses her troupe's trust after losing IBS. The team is in danger of dissolution due to the loss of a magazine.
손병호
as Sergeant Kang Cheol-in
임원희
as Wang Jong-pal
Lee Ah-i
as Staff Sergeant Lee Yu-mi
Kim Min-ki
as Sergeant Kim Sang-tae
박충선
as First Sergeant Park
이신성
as Corporal Kwon
김수현
as 2nd Platoon, Team 3
Kim Won-Suk
as Private Lee Byung
염우상
as Company Leader
이동진
as 1st Platoon, Team 2
하수호
as [3rd Platoon, Team 2]
