Following in the esteemed paw prints of Rin Tin Tin and Lassie comes “Max” (Warner Bros.), a heroic canine on a mission to vanquish evil while mending a broken family.

Max is an official “military working dog” in Afghanistan, trained to locate bombs and weapons.

When his handler, Marine Kyle Wincott (Robbie Amell), is killed, Max is distraught. Unable to continue working due to PTSD, Max is honorably discharged and sent home to Texas.

Under military rules, returning canines can be adopted by the family of their handler. And so Max is delivered to Kyle’s grieving parents, Pamela (Lauren Graham) and Ray (Thomas Haden Church), and his younger brother, Justin (Josh Wiggins).

Max is immediately drawn to Justin, much to the troubled teen’s annoyance. Justin is a rebel who disrespects his parents and their God-centered values, and hangs out with an unsavory crowd. The last thing he wants to do is babysit his late sibling’s dog.

A silver lining arrives in the person of Carmen (Mia Xitlali), a sassy new girl in town who has a way with canines.

Carmen lends a hand, as well as her heart, and soon a major boy-dog bond develops — as too does a romance between the two youngsters.

All seems rosy until Tyler (Luke Kleintank), a wayward member of Kyle’s platoon, shows up. Tyler has been illegally sidelining as an arms dealer, a secret Kyle threatened to expose before his demise.

Needless to say, Max is not happy to see Tyler, and before long Justin uncovers a nefarious plot, as well as hidden facts pointing to the truth about his brother’s death.

Despite some mild action violence which may be too intense for the younger set, “Max” is a wholesome — and welcome — family drama. The film nicely conveys Justin’s evolution from zero to hero, underscoring the importance of telling the truth and respecting your parents.

The film contains scenes of combat and human peril as well as dog-fighting and a few mild oaths. (A-II, PG).