It's Christmas day, and Harry and his friends are back for another adventure on their home island of Crete. When Harry hears that the dreaded Feather Gang of bullying eagles are back in town, he recruits the help of his trusted friends and neighbours to hatch a plan to defeat them once and for all. With his fellow rescue dogs Dixie and Poppy, wise-cracking Alfie the cat and his friends from around the island, Harry starts to put his plans into place. Will they get rid of the Feather Gang, or can they reach a peaceful solution for everyone? Many surprises unfold, but not without the gang's dedication to teamwork, loyalty, friendship and courage.