Former police dog Zeus (Mario Lopez) is thrilled to be adopted by the Bannister family, just in time for Christmas. His future with his new family seems uncertain, however, when it appears that he is not a good guard dog. The family leaves Zeus alone at home when they go on vacation, and after they depart, two determined burglars break in, giving Zeus a chance to prove his worth. Dean Cain and Gary Valentine co-star in this fun family frolic.