The Kung Fu Kids want to live in the city with
their grandmother. Grandpa, however, disagrees.
He fights a duel with grandma in order to decide.
the city, they enroll in a school where they
excel at physical exercise because of their
kung fu training.
Grandpa meets an old friend
and they enter an inn where a martial arts
contest is taking place. A gang of kung fu
experts challenges grandpa to a duel. On the
day of the match, grandpa is unwittingly drugged
and cannot sustain his strength. The old man
kids resolve to train hard in order to rescue
grandfather. They challenge the kung fu experts
and invade their headquarters. The kids find their
grandfather. Together, they defeat the hoodlums.