Originally, Sukeza (Toshiro Mifune) just wanted to become a pirate, but
after his ship is sunk and his treasure is stolen by the Black Pirate
(Makoto Sato), he finds himself stranded on a strange island - where he
finds a necklace from his treasure trove around the neck of local Princess
Yaya (Mie Hama) - and figures there's something fishy going on.
To get through to the Princess and convince her that the necklace is
actually his isn't even the problem, but Sukeza soon finds out there is a
big conspiracy in the works and with the help of outlaw Miwa (Kumi
Mizuno), who has fallen in love with him, and her gang he tries to uncover
the conspiracy and save the Princess - whom he has fallen in love with
even though she is promised to Prince Ming (Jun Funota).
Eventually, Sekuza finds out that the Chancellor (Tadao Nakamaru) is
secretly running the island, has employed a witch (Eisei Amamoto in drag)
to slowly kill the king (Takashi Shimura), and is in league with the Black
Pirate who is supposed to see to it that Prince Ming disappears out
in the open sea. Sekuza and his gang however rescue Ming and mount an
attack on the castle - on the day of the Princess' reluctant wedding to
the Chancellor too - that even involves Sekuza flying a hang-glider, while
his clumsy wizard friend (Ichiro Arishima) takes care of the witch.
Of course, Sekuza and gang are victorious in the end, but he doesn't
get the girl - neither the Princess nor Miwa - and goes back to sea
looking for new adventures in the end.
Childish but rather likeable adventure yarn comparable to the peplums
(sword-and-sandal-films) that were at the time produced in Italy a dime a
dozen - but done with way more care and a higher budget. Actually the film
is quite well-looking, is well-paced, well-acted and pretty entertaining
in an innocent sort of way. Of course you will probably have forgotten the
whole film the very next day, but that doesn't mean it isn't enjoyable ...
By the way, for the American version Toshiro Mifune's character was
rechristened to the more familiar Sinbad - for no narrative reason