Each year, three brothers Samuel, Jeffrey and Michael Douglas visits their Japanese grandfather, Mori Shintaro whom the boys affectionately refer to as Grandpa, for the summer. Mori is a highly skilled in the fields of Martial arts and Ninjutsu, and for years he has trained the boys in his techniques. After an organized crime ring proves to be too much for the FBI, it's time for the 3 brother NINJAS! To use their martial arts skills, they team up to battle the crime ring and outwit some very persistent kidnappers!
Victor Wong
Grandpa Mori Tanaka
Michael Treanor
Samuel 'Rocky' Douglas Jr.
Max Elliott Slade
Jeffrey 'Colt' Douglas
Chad Power
Michael 'Tum Tum' Douglas
Rand Kingsley
Hugo Snyder
Alan McRae
Samuel Douglas Sr., FBI
Margarita Franco
Jessica Douglas
Kate Sargeant
Emily
