3 Ninjas 4 was released in the year 1998。3 Ninjas 4 is also called as 3 Ninjas: High Noon at Mega Mountain, 3 ninjas à la foire, 3 ninjaa Megavuorella, 3 Ninjas: Showdown at Mega Mountain, 3 Ninjas Vingadores, 3 Ninjas 4: Showdown at Mega Mountain, 3 Ninjas 4: High Noon at Mega Mountain, 3 Ninjaa pistää tuulemaan。

Three young boys, Rocky, Colt and Tum Tum together with their neighbor girl, computer whiz Amanda are visiting Mega Mountain amusement park when it is invaded by an army of ninjas led by evil Medusa, who wants to take over the park and hold the owners for ransom. Kids and retired TV star Dave Dragon, who made his farewell appearance at the park at the time the ninjas appeared, have to break Medusa's vicious plans.

3 Ninjas 4 actors and actresses include Hulk Hogan, Jim Varney, Kirk Baily, Loni Anderson, Mathew Botuchis, Michael O'Laskey II。