The Dark Ninja, whom was banished 10,000 years ago, has returned to rule Miracle World. He also takes young Alex's girlfriend and use her as a sacrifice.
To help Alex defeat the Dark Ninja and rescue his girlfriend, a god enters Alex's body, causing Alex to become a ninja master.
There are four rounds, with three levels each, and has Alex travel through locations like office blocks, construction sites, shipyards, and jungles.
He must go through each level defeating ninjas and other wildlife. In the last levels, he must defeat bosses including Kabuto, Heli, Robster, and Hanzo. To survive some levels, you must learn the secret jumping technique, described on page eight of the game's instruction manual. …
You start the game with three lives and are presented with an energy bar with three units, but you'll lose one if an enemy touches you. Furthermore, If you lose all three energy units, you lose a life, and if you lose all three lives, the game is over.