Filled with a rounded cast of Toho staples, Atragon is a rather dull mess coming from an era that is typically regarded for high quality. Released in 1963, this sci-fi romp is dreadfully dull for most of its running time, with most of its entertainment factor coming in the final 15 minutes. The story is too predictable to maintain itself for the 75 minutes prior.

The Mu Empire is one of those fantastical places that fell off the face of the Earth (insert large number here) years ago. However, the Mu were special in that they managed to survive continental collapse and began living underwater via means the audience is never aware of. Apparently tired of being stuck underground, the Mu begin an attack on the surface because, well, they don’t like us anymore.

Defenseless against the civilization, Earth only has one hope: The Atragon. This super submarine has all the tools needed, with one simple problem. It’s under control of a former Japanese captain who has severed all ties with his homeland due to their surrender in World War II. It’s up to a team of government officials, the captain's estranged daughter, photographers, and a reporter to convince him to join in the fight.

The highlight here is Jun Tazaki, famous for his role as the evil corporate owner in Godzilla vs. Mothra. His performance as the disgraced Captain Jinguji fully willing to fight for his beliefs is one of the few highlights in Atragon.

Eiji Tsubaraya lends his special effect talents for a few brief, inconsistent moments. The destruction of downtown Tokyo, being sucked underground as the Mu destroy the surface, is a classic example of Toho special effects. Others, such as the attack on the Atragon by Mu guardian monster Manda, are simply terrible.

However, it takes a staggeringly long time to reach the climax where Tsubaraya can showcase any of his talents. The story plods along in mystery form, even though there’s no mystery to be had. It’s blatantly obvious the Atragon will be used. Otherwise, there wouldn’t be a movie.

Sloppy storytelling is consistently evident. The Atragon is referred to as the Goten-Go for no apparent reason, and the reasoning behind the additional name is never explained. The Mu Empress is introduced late into the story as a critical plot device, yet she is never seen before this. The two lead characters, especially Tadao Takashima (King Kong vs. Godzilla) are tossed into the story for no reason other than their characters were in the right place at the right time.