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!
You can now watch 3 Ninjas online on the following streaming providers in the United States.
| Writing | Kenny Kim | Story |
| Directing | Jon Turteltaub | Director |
| Writing | Edward Emanuel | Screenplay |
| Production | Martha W. Chang | Producer |
| Production | Shunji Hirano | Executive Producer |
| Production | James Kang | Co-Executive Producer |
| Production | Hiroshi Kusu | Co-Producer |
| Production | Yuriko Matsubara | Producer |
| Production | Richard Park Wu-sang | Associate Producer |
| Production | Akio Shimizu | Co-Producer |
| Production | Susan Stremple | Producer |
| Sound | Richard Marvin | Original Music Composer |
| Crew | Richard Michalak | Cinematography |
| Editing | David Rennie | Editor |
| Costume & Make-Up | Mona May | Costume Design |
| Crew | Rick Avery | Stunt Coordinator |
| Crew | Erik Stabenau | Stunts |
| Crew | Dane Farwell | Stunts |
| Crew | Al Goto | Stunts |
| Crew | Pat Romano | Stunts |
| Sound | Wayne Nakatsu | Supervising Sound Editor |
