Rhianna Pratchett is set to write the screenplay for her first feature film, a London-based drama about a group of female vigilantes, to be produced by Simple Productions.

Pratchett, who is the daughter of fantasy author Terry Pratchett, is well known for her work in the gaming world. She was nominated for a BAFTA in 2007 for writing the video game Heavenly Sword, before going on to win a Writers’ Guild of Great Britain Best Videogame Script award for Overlord.

Her first feature, working title Vigilia, will be based in London and follows the rise of a female-centric vigilante group following the rape of a young woman. Shooting is due to begin in 2011.

Comedy director Amanda Baker, who made the 2009 short film Colour Blind, will direct the film.

Paul Atherton, who will produce for UK outfit Simple Productions, said: “Amanda and I were looking for someone with an unusual and unique voice. This is a big idea and we consciously made the decision to acquire an established writer, albeit one with no film experience, who isn’t afraid to break conventions. Rhianna is the perfect choice as she writes from a woman’s perspective in a traditionally male arena of violence.”