Bruce, Fergal, and Stevie are hoping to relax at Tammybrae House in the Cairngorms with Bruce\'s inventor uncle, Clovis the mackerel cat.
So he persuades the unwilling Bruce to help capture the marmot, who he is convinced must be part of the merciless McKitten Gang, a notorious band of Scottish wildcats.
Fergal is immediately suspicious.
They arrive to find that Clovis\'s latest invention has been stolen, a visiting professor is missing, and a strange yodelling marmot is in charge of the house.
Bruce, Fergal, and Stevie are hoping to relax at Tammybrae House in the Cairngorms with Bruce\'s inventor uncle, Clovis the mackerel cat