3 Ninjas Knuckle Up

3 Ninjas Knuckle Up是1995年的美國武術喜劇電影，也是3 Ninjas Kick Back的前傳。這部電影是由申相玉導演的，被譽為“西蒙·希恩”。該電影於1992年拍攝，同年發行了第一部電影，但直到1995年才發行。 

Rocky, Colt and TumTum must battle an evil wealthy toxic waste dumper in order to save a local Indian tribe and their friend Joe. The 3 Ninjas must help find Joe's father and find a secret disk that contains evidence that could stop the toxic landfill that is destroying the Indian community. However the town is owned by the rich man and he controls the police and even the mayor. They must fight a motorcycle gang and renegade cowboys in this non-stop ninja adventure.