In Japan, the home of Cho Osaki is attacked by an army of a rival ninja clan, resulting in the slaughter of his entire family except for his mother and his younger son, Kane.

Afterwards, however, he swears off being a ninja forever and moves with his son and mother to America, where he opens an Oriental art gallery with the help of his American business partner and friend, Braden, and his assistant Cathy.

One night, Kane accidentally drops and breaks open one of the dolls, exposing a white dust (which is in actuality, heroin) contained therein.

Seeing his only remaining son in mortal danger, Cho breaks his devotion to non-violence and makes his way to Caifano's headquarters to stop Braden.

After a long fight, Cho manages to kill Braden and is reunited with his son and Cathy as the film draws to a close.

This was due to the required pyrotechnics, mechanical rigging, safety considerations, elaborate camera positioning (including hanging 20 stories high outside the building), and helicopter shots.

[8] On Metacritic, the film has a weighted average score of 32 out of 100, based on 5 critics, indicating "generally unfavorable reviews".

[9] The film became a cult hit due to its elaborate martial arts sequences and B-movie production values.

[10][11] Variety gave it a generally favorable review, calling it "an entertaining martial arts actioner" and praising the "fight choreography by Kosugi", despite lacking the "name players and Far East locale" of Enter the Ninja.