Syfy has announced the premiere date for its new "Krypton" Superman prequel TV series.

"Before #Superman came to Earth, #Krypton forged its own legends," the show's Twitter account said Thursday.

"From the writer of #ManofSteel & #TheDarkKnight, witness the beginning, 3.21 on @SYFY."

Starring Cameron Cuffe, Ian McElhinney, Georgina Campbell, Elliot Cowan and Ann Ogbomo, the series is being executive produced by David S. Goyer.

"Set two generations before the destruction of the legendary Man of Steel's home planet, Krypton follows Superman's grandfather -- whose House of El was ostracized and shamed -- as he fights to redeem his family's honor and save his beloved world from chaos," a synopsis said.