The future of seven seamen hang in the balance due to Lt. Singer's recommendation of court martial for all of them following a mishap on the ship. However, Singer's career could also be doomed if the father of her unborn child is someone on the Seahawk, and it's Harm and Mac's job to find out who it is. The problem is, the career-oriented Singer isn't talking, so Harm enlists the help of Lt. Manetti to do some sneaky behind-the-scenes investigating in order discover the identity of the father.