A legendary dog trainer believes he can transform Marmaduke from an undisciplined, but lovable dog, into the first Great Dane to win the World Dog Championship....
The last thing Eddie Mills (Larry Clarke) wants to do is go home to deal with his dying Dad (Brian Dennehy). But the Catholic guilt gnaws at him, and he returns home to his crazy family, an overbearing step-mother (Leslie Ann Warren) , and his bear of a father. Once there, Eddie is confronted with a revelation that forces him to deal with the past he has always avoided....
