The sort of swash buckling silent movie epic Douglas Fairbanks Senior was born for and set the screen action hero template for. With some scenes of quite stark brutality, including the dumping of corpses in a heap and lots of murder, we are hurled into the savage world of the pirates led by Anders Randolf and Sam De Grasse. The Duke of Arnoldo (Fairbanks) is seeking revenge on the pirates for murdering his father, he thus infiltrates their band as the Black Pirate...
The Black Pirate soon proves himself as he helps capture a ship and he rises up the ranks, but his plans for revenge are complicated by the lovely Isobel (Billie Dove) whom he must protect from the evil clutches of his fellow pirates...
Although a lot of the more extreme violence is implied off-screen, the film can be very bloody, and in it's Technicolor print (one of the earliest) would have been very red! As a silent movie action epic this can't be faulted, Fairbanks was at his wash buckling action hero peak. The story may be pretty obvious but that is not the important thing here, it's spectacular.