3 Ninjas: High Noon at Mega Mountain

During their summer vacation with their grandfather Mori, Rocky, Colt and Tum-Tum take a test on an obstacle course in pitch blackness. They manage to complete the course, yet fail to learn how to use their other senses, in place of sight. Later that night, Mori overhears Rocky and Colt planning on not returning the next year due to them growing older, leaving Tum-Tum for himself. Mori becomes depressed at this.

Returning home, Tum-Tum also becomes depressed after learning that his favorite TV show called Dave Dragon & the Star Force 5 is going off the air soon from cancellation and not even an offer of his favorite sandwich can cheer him up, which confuses his mother Jessica. During the next day, they meet a new neighbor, Amanda, who accidentally crashes her remote controlled helicopter into their house's window; she apologizes for it. To recompense, Jessica invites her for breakfast and attend Tum-Tum's birthday party at Mega Mountain; an amusement park modeled after Six Flags. Once they arrive to the park, Rocky goes off on his own to spend with his girlfriend, Jennifer alongside her friends Eric, Doyle & Veronica while Tum-Tum convinces Colt to go with him to a special live Dave Dragon show. While the kids are enjoying themselves, a criminal named Mary Ann "Medusa" Rogers and her henchmen sneak in and commandeer the park, disabling many rides and shutting the place down to hold the patrons hostage. Medusa and her henchmen infiltrate the park's command center operations and she threatens the park's owner, Harry Jacobsons to pay the exchange of $10 Million ransom for the safety of the park's guests. Meanwhile, Tum-Tum and Colt want to get an autograph from Dave until they witness and save him from being captured by Medusa's henchmen (who they seem to know as the only viable threat to Medusa's plans) and then chase them down onto the western theme special show. Rocky spots this from the security camera and rejoins his brothers fending them off. The boys and Amanda realize the ideal of the park being compromised and awaken Dave to tell about it who then goes off to fight them off before Amanda finds the radio to transmit on top of the park's tower to call the Police and the Firefighter units for emergency. However, Medusa and her henchmen spot the police and ambush them which causes the FBI led by Sam to come to the park after Sam was called in regarding the situation. Afterwards, Medusa orders her Jamaican sidekick C.J. to jeopardize the Avalanche ride. After planning to save the guests on the Avalanche ride, Amanda gives the boys some arsenals of weapons that she possesses that they make use of to fight against some of Medusa’s henchmen while she tries to stop the ride with the emergency stop control before intercepting her laptop to override the controls. After they meet Medusa from the camera monitor, she prints their faces.

Knowing that they will interfere with her plans, Medusa sends her 3 dimwitted nephews Carl, Buelow and Zed to capture them, but they are taken down by the boys who use the park's carnival game and a ride with their ninja skills. Meanwhile, Dave sneaks into the command center, but is quickly discovered and captured while the Police and FBI bring the SWAT unit for some reinforcements until Medusa’s henchmen prevents them from entering the park by setting a trap with electricity. In the meantime, Amanda utilizes the park’s main control systems with her laptop to lock the access down with C.J. trying to wrestle the controls from her but not before Medusa quickly accesses the roller coaster’s emergency brake before having her henchmen imprison Dave to the middle of the roller coaster loop with several guests that are held hostage. One of Medusa’s henchmen tortures Dave while Medusa demands Jacobson for the ransom in exchange for the guests safety. Sam implores Jacobson to pay the ransom.

Finding footage of Rocky and his girlfriend Jennifer, Medusa’s nephews capture Jennifer and tie her to the bottom of the roller coaster loop tracks, at which point Medusa threatens to crush her if they don’t cooperate. Rocky goes off to rescue Jennifer. Watching the video footage of her nephews tying Jennifer at the loop track, Medusa sends her second-in-command Lothar Zogg out to the capture boys so they don't interfere. Rocky arrives to rescue Jennifer, but he gets attacked by Lothar. After a fight that leads to both Rocky and Lothar ending up at the top of the roller coaster loop, Rocky knocks Lothar off with a yo-yo around his ankle to make him literally bounce out of the park and into the hands of the FBI that are stationed outside of the park. Rocky then manages to free Jennifer before Medusa releases the roller coaster that can crush them both. Jaco{{}}bson arrives via helicopter with the several bags of money to pay the ransom, but Amanda manages to destroy the bags with her helicopter. This causes the ransom money to rain down onto the park with the park guests snatching it all. Amanda is quickly captured by Medusa, who escapes underground with the remainder of the money. When Dave fends off Medusa's ninjas, she knocks him out. The boys successfully manage to defeat some of Medusa's ninjas until she shoots all of the lights out on sight. After she darkens the halls, Medusa's ninjas attack the boys with their night vision goggles to fight against them. The boys overcome their weakness in the dark with Mori's advice about using their senses. The boys defeat Medusa's ninjas, in order to rescue Amanda, who is handcuffed next to a bomb. They manage to free her, but they are unable to disarm the bomb due to the short circuited power supply, so they attach it to an oxygen tank and with Dave's help, they knock off the tank's valves and send it off like a torpedo down to Medusa's escape ship. Medusa's ship explodes on impact. Alerted to the explosion, the FBI arrive to arrest Medusa at the beach, who resigns herself to defeat.

Now hailed and commemorated as heroes, the boys give the credit to Dave Dragon, hailing him as the real hero, to the press. After reuniting with their parents and grandfather, Rocky and Colt assure Mori that they will not be leaving their training. They also extend the offer to Amanda to come train with them on the following year and she gladly accepts. The film and series end with them all celebrating Tum-Tum's birthday.

• Mathew Botuchis as Samuel "Rocky" Douglas Jr.
• Michael O'Laskey II as Jeffrey "Colt" Douglas
• James Paul Roeske ll as Michael "Tum-Tum" Douglas
• Hulk Hogan as Dave Dragon
• Emily Roeske as Little Girl
• Lindsay Felton as Jennifer
• Chelsey Earlywine as Amanda
• Alan McRae as FBI Agent Sam Douglas
• Margarita Franco as Jessica Douglas
• Victor Wong as Grandpa Mori Tanaka
• Loni Anderson as Mary Ann "Medusa" Rogers
• Jim Varney as Lothar Zogg
• Kirk Baily as Carl
• Brendan O'Brien as Zed
• Travis McKenna as Buelow
• Dwayne Carrington as C.J.
• Pat Mahoney as Harry Jacobson

Filming began in 1996. Hulk Hogan, wrestling in World Championship Wrestling at the time, wore a wig for the film which resulted in him having a different hairstyle than his traditional bald look. As a result, he is seen in Halloween Havoc 1996 with a similar hairstyle as he had in the film. Elitch Gardens, the park at which it was filmed, underwent a complete remodel, with all the signs for the park and rides being changed and renamed for the film. However, there are a few times when the real ones are seen in the background.

The film had universally negative reviews and is generally considered to be the worst of the four in the series.[2] On Rotten Tomatoes the film has an approval rating of 0%, based on 6 reviews.[3]

Joe Leydon of Variety wrote: Only small children with limited attention spans will be impressed by the lackluster kung-foolishness.[4] Anita Gates of The New York Times says things are sad when Hulk Hogan gives the most touching performance in the film. Gates calls the film "interminably boring" but concedes it is possible young children might enjoy it.[5][6]

The Film was later released as a trilogy set along with the 2nd and 3rd films in the franchise, and has since seen a nostalgic revival. Simon of "The Mighty 90s" called it the most 90s movie you can watch [7] also stating it had the most complex and impressive fight scenes of the franchise.

• 3 Ninjas: High Noon at Mega Mountain at IMDb