Puzzled by the sad dog outside their gate, Max & Colby try to make friends, but the dog just sits there. The two friends don't give up! They work together trying everything they can think of to help the mystery dog. Will their efforts cheer up the lost dog? Most of all, Max and Colby hope the dog's family will find their missing pet. Quel est ce chien à la porte de Max et Colby ? Pourquoi paraît-il effrayé et si triste ? Max et Colby espèrent se faire un ami de ce mystérieux chien et cherchent à l'aider à tout prix.