枯燥严肃的家庭氛围让年轻富有朝气的莫利（蕾希·特纳 Lacey Turner 饰）感到忍无可忍，身为家中的长女，父母对莫利的严格管教像一块巨石压在莫利的胸口让她无法喘息。在18岁生日上，压抑已久的莫利只能通过酒精麻痹痛苦，喝得烂醉的她徘徊在街道上。可以说是偶然，也可以说是上帝的指引，在不知不觉中，莫利来到了国家陆军征兵处的门前，而这一“意外”将永远改变莫利的命运。背负着巨大的压力，莫利成为了一名士兵。刚开始，初来乍到的她并不能适应军中的生活，但随着时间的推移，她越来越感觉到，自己做出了正确的选择。在不断的自我成长和严格的自我要求中，莫利逐渐发现人生的方向。

Written by Tony Grounds and made by BBC Drama Production for BBC One, Our Girl will return to our screens with Two Section on an African mission, with a new female medic at their centre. Michelle Keegan will play Corporal Georgie Lane, a brilliant and committed soldier who loves the adrenaline and adventure of her job. Georgie will have to earn the love and trust of her fellow soldiers, and the greater respect of her commanding officer, while working alongside aid workers in the biggest refugee camp in the world. Kenya is a complicated and volatile posting - one which Georgie will find full of surprises that will challenge her professionally in unexpected ways, and which will change her personal life forever.