Howard Langston, a salesman for a mattress company, is constantly kept busy at his job, disappointing his son. After he misses his son's karate exposition, Howard vows to make it up to him by buying an action figure of his son's favorite television hero for Christmas. Unfortunately for Howard, it is Christmas Eve, and every store is sold out of Turbo Man. Now, Howard must travel all over town and compete with everybody else to find a Turbo Man action figure.

Echoing the comic tone of the "Police Academy" films, Ninja Academy boasts an ensemble cast of hilarious characters, bonding while training hard, playing hard and ultimately, losing hard-- In the tough, unforgiving world of martial arts.