In this family-friendly comedy drama, Walter (Haley Joel Osment) is a shy and bookish boy just short of his teens whose mother impulsively decides to leave him for the summer with his eccentric grand-uncles, Hub (Robert Duvall) and Garth (Michael Caine). Walter isn't especially happy about being left in the middle of Texas with two old men, while Hub and Garth aren't too pleased to be stuck minding a boy, especially one who isn't accustomed to hunting, fishing, or firearms. When Walter starts hearing local gossip about his uncles' wild and wooly pasts, he begins asking a few questions, and while Hub and Garth don't enjoy having the boy poking into their pasts, as they start telling tales of their youthful adventures, they find themselves itching for some new adventures in their lives. Soon Walter is a semi-willing accomplice as his elderly guardians rediscover the wild, impulsive spirit of youth. Secondhand Lions was produced in part by the well-respected visual effects house Digital Domain, who also helped create the imagery for the film's flashback sequences.
~ Mark Deming, All Movie Guide