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Espionage team "Mighty Jack", headquartered on a flying submarine, opposes the plans of Q, which is trying to take over the world using... um... ice that doesn't melt.


Kazuho Mitsuta


Shin'ichi Sekizawa, Eizaburo Shiba (as Eizaburou Siba)


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Credited cast:
Hideaki Nitani Hideaki Nitani ... (archive footage)
Naoko Kubo Naoko Kubo ... (archive footage) (as Naoko Kobo)
Hiroshi Minami Hiroshi Minami ... (archive footage) (as Hiroshi Ninami)
Hideyo Amamoto ... (archive footage)
Masaya Nihei Masaya Nihei ... (archive footage)
Wakako Ikeda Wakako Ikeda ... (archive footage)
Akira Kasuga Akira Kasuga ... (archive footage)
Seikou Fukioka Seikou Fukioka ... (archive footage)
Noriaki Inoue Noriaki Inoue ... (archive footage)
Yoshitaka Tanaka Yoshitaka Tanaka ... (archive footage)
Mitsubu Ohya Mitsubu Ohya ... (archive footage)
Eijirô Yanagi Eijirô Yanagi ... (archive footage) (as Eijirou Yanagi)
Rest of cast listed alphabetically:
Jerry Itô Jerry Itô ... Roberto Okamura
Sumio Takatsu Sumio Takatsu


The organization Mighty Jack is formed to combat the criminal syndicate known as "Q", and are given a large array of advanced weapons, chief among them being a high-tech submarine. Harold Hatari is abducted by Q, and Mighty Jack is dispatched to rescue him. Hatari is interrogated and threatened with blinding lights, but the Mighty Jack crew rescue him in the nick of time. Later, Q is discovered to be using "hot ice" (water that remains solid at room temperature) to create weapons and a secret ocean base disguised as an iceberg (though it's not precisely clear how hot ice could be a major world threat). Q then attempts to take over the Mighty Jack sub. Written by Leo L. Schwab <ewhac@best.com>

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Plot Keywords:

spy | edited from tv series | See All (2) »


Action | Sci-Fi




USA | Japan



Release Date:

6 April 1968 (Japan) See more »

Company Credits

Show more on IMDbPro »

Technical Specs

Sound Mix:




Aspect Ratio:

1.33 : 1
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Did You Know?


When the flying Mighty Jack ship lowers its nose to return to the ocean the clouds in the background also make the same movement. See more »


Referenced in Mystery Science Theater 3000: Gamera vs. Zigra (1991) See more »

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User Reviews

Outdated background noise...
20 May 2018 | by George ClarkeSee all my reviews

I remember buying Mighty Jack for £1 in a discount store many years ago. There was nothing overly appealing about it (apart from the price), but I knew that with most 60's/70's Japanese sci-fi action films, there was often a diamond in the rough that provided some genuine viewing pleasure for fans of Asian cinema. And after a few years on the shelf, I finally got round to watching it...

A diamond it is not.

By no means is Mighty Jack terrible! It's shot well enough, the (dubbed) performances seem alright, and the action is akin to that of the oldest Godzilla movies (albeit minus the rubber suited monsters). With a dull, out-dated looking print taken straight from video, I'm sure Mighty Jack would actually fare better with a HD clean up and original language release. It just screams late 60's film, taking tips from James Bond in style and with its main Western villain called Q, complete with fluffy white cat on his lap.

Mighty Jack itself is a submarine vessel that plays as the base for the good guys. That's pretty much the basis of it all. Even though the team spend much of the film above the water, they gather now and again on Mighty Jack to thwart the evil Q via a collection of scenes that plays out like an episode of the classic Thunderbirds.

Although not as bad as much of their other content, Mighty Jack is the kind of film you would probably see on Mystery Science Theatre 3000 - allowing for plenty of laughs and corny entertainment. And that includes a classic 60's freeze-gun! You could do worse, but for £1 and some background viewing, I'm happy enough...

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