Nick is destined to lose another relationship when he is attracted to the driver in a fatal hit-and-run.

When Jack and Dash are called out to the local high school, Jack becomes the victim of a schoolgirl prank. It seems that some of the girls have a large crush on Mt. Thomas's most handsome constable. Determined to make more than his professional acquaintance, the girls misconstrue Jack's awkward attempts to fend them off as the shy response of a sincere copper. Unluckily for Jack, he's even more adorable than they imagined. While PJ and Ben enjoy ribbing the new ""Don Juan"" of Mt. Thomas, the Boss sees trouble brewing. As a father, Tom knows how unchecked fantasies can turn the minds of teenage girls, and Lawson must learn to wear the uniform without his heart on his sleeve. With Tom's disapproval apparent, Jack turns to the newly arrived recruit, Constable Greg Mason, for advice. Mason is a former teacher with a degree in schoolyard psychology, and he warns Jack to stay well clear of schoolgirl affections. The advice comes too late for Jack, who has unwittingly become the man to lean

The Heelers provide protection for the local vet, who orders inspections of all sheep properties after an outbreak of a highly infectious disease. Johne's disease threatens to kill every sheep in Mt. Thomas, and ""Dr Death""—as the vet becomes known—is not popular. Farmers demand a scapegoat as they succumb to the inspections. Somebody must be responsible for carrying this blight to the district, and the only new sheep in town belong to Senior Constable Robyn Taylor. Robyn, with her husband Jeff, escaped the city to reap the good life in Mt. Thomas. Jeff decides a few sheep might supplement their income while they establish a vineyard. The local farmers have little respect for these dabblers and immediately suspect the Taylors are responsible for the Johne's outbreak. When one of Robyn's sheep dies, the town's worst fears are confirmed. Ben and PJ investigate and find that Jeff has forged a deed of sale and that he bought the sheep via the Internet. How could he be so gullible? the