Detroit single mom Taraji P Henson relocates to China with her 12-year-old son Jaden Smith.

He finds it difficult to fit in and matters aren’t helped when he’s tormented by a bully.

Luckily, martial arts master and janitor Jackie Chan’s on hand to teach the boy kung fu in time for a big tournament.

Also, there’s a cute Chinese violin prodigy (Wenwen Han) to romance and the bully’s ass to kick.

This predictable remake of the 1984 film is too long, but it’s good-natured, well-meaning and good-looking.

Smith is effective, too, but it’s Chan who makes the film, bringing dignity and weight to his role.