When Hugo McCreadie steps into Isla Brodie's pet portrait studio to get a "Festive Furball Photo Shoot" for his sister's cat Schubert, he does question his sanity. But he knows the photographs will be the perfect Christmas present for his eccentric sister, Nessa and he finds himself quite taken with ditzy, animal-loving Isla Brodie, too. Will a Christmas secret from long ago prevent Hugo and Isla's new friendship from going any further? Or will a certain big, black cat taking matters into his own paws lead them not only on a mad winter dash through snowy Edinburgh but into each other's arms for Christmas as well?