Four couples are heartbroken with their pending separation caused by the compulsory military service. The boys are worried their girlfriends will now have an excuse to meet other men. The girls are also having a hard time getting used to living without their boyfriends. Will the boys successfully fulfill their obligation and return to their girlfriends?

Cast
Son Tae-yeong
Jang Geun-seok
Yoo In-yeong
Kim San-ho
Denny Ahn
Han Yeo-reum
Woo Seung-min