As summer ends on Hazel Tree Farm, the Farrellys have a lot on their minds.

Kate is doing her best to inspire the people of Ballynoe with her ‘Operation Plan Bee’, a scheme to protect the precious insect population. Meanwhile, Mam and Dad are hoping a new herd of giddy Angus heifers will improve the farm finances.

Peter dreads going back to school, especially now he knows that rude Simon Sinclair, who has moved into the big house down the road, will be in his class. When Simon goes missing, Kate, Peter and their loyal sheepdog Blue rush to help with the search. But are they too late?