在未来的新加坡，由于出生率的持续低迷、人口减少导致严重不够男生加入国民服役，当局决定：20岁以上的女生也必须入伍服兵役。第一批女兵入伍被征召入伍，二班来自不同背景的15位女生们同住一个宿舍，在她们当兵接受训练后，又会发生什么有趣的故事呢？

WHAT IF, in the unforeseen future, when there are not enough boys in Singapore? If Girls have to serve National Service also, what will happen? The story will focus on the first batch of female recruits, a bunch of Gen Z teens and youngsters with different backgrounds and education. As they trained under the fierce leadership of Sergeant Chow and Lieutenant Roxanne, they find themselves being pushed to the limit of their potential. Together, they overcome hardship and initial resistance to serve NS and discover newfound abilities, using it to solve and mend relationships in their personal life as well.