Russell Crowe, Lucy Liu Go Kung Fu Fighting in 'The Man With the Iron Fists' Trailer (Video)

Wu Tang Clan's RZA makes his directorial debut with the action martial arts film.

Have you ever needed instructions for forging a weapon? We know we have.

The recently released red-band trailer for The Man With the Iron Fists, the directorial debut for Wu Tang Clan’s RZA, provides the added bonus of giving very clear instructions as to what is required to make a weapon.

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“When you forge a weapon, you need three things: The right metal, temperatures over 14-hundred degrees… and someone who wants to kill," says the voice-over by RZA's character.

If there’s anything the characters in Universal’s film, which is being “presented” by Quentin Tarantino, want to do, it’s kill.

The film, written by RZA and Eli Roth, stars RZA as a blacksmith who lived in a 19th century Chinese village that seems to be inhabited by only ruthless killers (played by Lucy Liu, Russell Crowe, Pam Grier and Jamie Chung).

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The first trailer doesn’t really explain much more of the plot, but shines with plenty of glamorous weapons and complicated fight scenes. From what we gather, Liu’s character runs a school for beautiful assassins, and she carries a “killer” fan.

The Man With the Iron Fists hits theaters this fall.

Watch the trailer above.