The Levy family are just starting their new life together but there seems to be something missing. The boys, Jesse and Liam, are not getting along and their mum doesn't know what to do. The situation gets worse when their dad has to leave town on a business trip. Just when things seem hopeless, the boys Uncle Nick comes to visit and brings with him Sox; a small, adorable dog. The family soon discovers that Sox is not your typical pooch. As it turns out, Sox holds certain magical powers and is in high demand; the local dogcatcher and the mysterious F.B.D.I (Federal Bureau of Dog Investigation) will stop at nothing to make Sox their own. Can the Levy's keep him safe?