The Tuckers are forced back together when Macaulay is taken into care. Michael Stubbs is struggling with life as an officer and when an exercise goes wrong and the investigation by SIB brings Garvey into contact with his past.
B Company are on exercise in the Northern Territory of Australia and are introduced to their Medical Officer who ruffles a few feathers. Their true test is during an exercise in the outback when all their skills are put to the test.
Michael Stubbs is keen to make a good impression in front of the Australians and his superiors but luck is not on his side and an event back at home makes him realise that the army is not all he should think about.
As the men return to the UK and go on leave, an face from Dave Tucker's past comes to visit. Paddy Garvey and Nancy Thorpe make some important decisions and Major Rory Taylor reflects on what might have been.
Michael and Marsha start to drift apart when these each pursue their own agendas. Joy Wilton has to decide if she should follow her heart and Jeremy Forsythe has to overcome his own enemies to triumph.