The day of Major Kieran Voce and Captain Kate Butler's wedding arrives and Lieutenant Jeremy Forsythe and the lads help to rescue the day. Donna Tucker starts to get closer to her tutor.

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.

The Tuckers receive help from Nancy to find the truth about Macaulay. Jo Farrell seeks Marsha Stubbs help to woo Collette but it starts to backfire when their partners become suspicious.