Max is assigned to the
White House while Charlie, the
Secret Service dog, is on maternity leave. He meets Thomas Bennett Jr. (T.J.), a 12-year-old boy, who is the son of
President Thomas Bennett Sr. Due to his father's high profile, he is trying hard to fit in and lead a normal life. During a state visit by the
Russian prime minister and his daughter, Alexandra (Alex), T.J. is asked to accompany her, during their stay. T.J. befriends Alex, but when they sneak out of the White House in an attempt to find a party thrown by some of his new friends at school, two masked villains try to kidnap T.J. and Alex. Luckily for the kids, Max has also managed to sneak out of the White House, following T.J. and Alex, and jumps in to save T.J. Max bites the ankle of one of the bandits and Alex and T.J. are able to escape the kidnappers' clutches and run back to the White House, where they promptly get in hot water with their parents and the White House security detail. T.J. and Alex form an unlikely alliance and start investigating the nefarious doings of all they suspect. As their many attempts at sleuthing backfire and a harrowing attempt at harming the
First Lady is narrowly foiled by Max, the Secret Service finally persuades Thomas Sr. to relieve Max of his duties. After that incident, the
Russian president declares to President Bennett, "If you cannot protect your children, how are you going to protect our children?" and decides to return to
Moscow, cutting his visit short. T.J., who is despondent, cannot sleep and while searching for an early morning snack in the kitchen discovers that Chef Coop is the
Russian mole. Coop locks him in the freezer and escapes. Meanwhile, Olga tricks Alex into following her into woods, so that Coop can abduct her. Max finally escapes from his cage and smashes back into the residence to save T.J., alerting everyone to the misdeeds at hand. After a heroic pursuit of the criminals by Max and T.J. with both Presidents and Agent Thorn, the perpetrators are captured and Alex is rescued. Thomas Sr. apologizes to his son for not listening to him and assures him that the
First Family is a family first. T.J. and Alex convince their fathers to resume their talks where a historic agreement is reached and an award for bravery is bestowed upon Max. In the end, T.J. kisses Alex thanks to Max nudging T.J., and he gets a surprise; Charlie had three puppies and T.J., wants to keep them all and starts playing with them. == Cast ==