Beethoven's 3rd (2000)

The Newton family drove a station wagon on a long trip to visit their relatives. Apart from Richard, the head of the family, other family members thought it would be a monotonous and boring holiday. Not long after they hit the road, there was an unexpected passenger, ── Beethoven, who was not only huge, drooling, eating amazing, but also good at causing trouble, and the beautiful holiday was about to turn into a catastrophe. Just when Beethoven was losing his position in the Newtons, two evil thieves appeared and planned to attack the Newtons. how would Beethoven teach the two thieves to protect the Newtons?