Kaiju Fever: Atragon (1963)

Here's a Sci-fi Tokusatsu film directed by the great Ishiro Honda and starring a bunch of Godzilla regulars. It's not much of Kaiju film itself, but it does feature the giant Dragon-like sea serpent Manda (who would go on to appear in the Godzilla film series) albeit rather scarcely. The films focus instead is on the flying super submarine Gotengo and is very story driven and light on the action.
The plot concerns the lost underwater Mu empire who resurface and threaten to overtake the world, with the only hope of stopping them being the super submarine Gotengo. It deals with themes of Nationalism and Patriotism, I particularly liked the Captain Jinguji character who at first refuses the use Gotengo to help the world purely because it was built to restore the Japanese Empire.
Overall I really enjoyed this and thought it was a solid movie, it may not have that much action but the story was still really well executed.
***1/2