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.

The men take part in an exercise to locate a downed Australian World War Two aircraft ends when the weather takes a turn for the worse and it causes Major Rory Taylor's dreams to be cut short.

Brad Connor receives some bad news from back home. The men go on exercise against the Territorials and one reservist causes a lot of trouble for Jo Farrell and Steve Evans.

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.

Paddy Garvey struggles to tell Dave Tucker his news until it's too late whilst Dave tries to woo back Donna. Complications during a live firing exercise results in a secret coming up to the surface.

New arrival Fusilier Andy Butcher struggles to make a good impression on his first day and his actions result in the Colonel's relationship being put under strain.

Michael and Marsha Stubbs have to decide if they should give their marriage another chance. Corporal William Markham joins B Company and his wife creates friction amongst the other army wives.

B Company are sent to South Africa on exercise and to help build a new medical centre. The locals situation lead Jeremy Forsythe and Andy Butcher to let matters of the heart cloud their judgement.

The remaining men fight to escape from Mokindi with one soldier sacrificing his life for the others. Dave and Donna have to decide if it is the end of the line for their marriage.