<P> The first series starred Lacey Turner as Molly Dawes, a young woman from a working class background who joins the British Army after deciding her life is going nowhere . A one - off special was broadcast on 24 March 2013 on BBC One, which saw Dawes make the decision to join the army, despite the protests of her protective family . A 5 - episode series was subsequently broadcast, beginning on 21 September 2014 . Iwan Rheon and Ben Aldridge joined the main cast as Private Dylan "Smurf" Smith and Captain Charles James respectively . </P> <P> In the second series Michelle Keegan replaced Turner as the show's lead, playing the new character of Lance Corporal Georgie Lane . Ben Aldridge returned to the cast while newcomers Luke Pasqualino and Royce Pierreson joined the series as Special Forces Officer Elvis Harte and Doctor Jamie Cole respectively . The first two series were filmed in South Africa . Series two began airing on BBC One on 7 September 2016 . </P> <P> For the third series twelve episodes were commissioned, to be shown in three blocks of four episodes, each covering a different mission . Filming for this series took place in Nepal, South Africa and Malaysia . Our Girl: Nepal Tour began broadcasting on 10 October 2017 . Keegan, Pasqualino and Aldridge returned, with Shalom Brune - Franklin and Rudi Dharmalingam joining the cast . </P> <P> The one - off 2013 special sees 18 - year - old Molly Dawes (Lacey Turner) from the East End of London decide to join the army, deciding her life has no purpose on discovering that her boyfriend has been cheating on her . She initially keeps this decision a secret from her family, which comprised her controlling father Dave (Sean Gallagher) and doting mother Belinda (Kerry Godliman), encouraged only by the manager of the recruitment office, Sergeant Lamont (Paul Fox). When the truth is exposed, Dave demands she changes her mind, threatening to disown her from the family if she does not; leaving Molly to make the heartbreaking decision to step away as she heads off to training camp . Here, Corporal Geddings (Matthew McNulty) initially doubts Molly's strength as a potential soldier, but she strives to prove herself and eventually earns the respect of her peers, even reuniting with her mother Belinda when she visits her to apologise for Dave's actions . </P>

How many episodes of our girl season 3