Game of Thrones star Peter Dinklage will star in and produce Sony’s Rumpelstiltskin.

Patrick Ness has been roped in to pen the script, reported Variety.

Karen Rosenfelt, Circle of Confusion’s Matt Smith and David Alpert, David Ginsberg, and Josh Weinstock are producing the film. Dinklage and Ginsberg will produce through their Estuary Films banner.

Sources said the film was still in deep development and would not be Dinklage’s next project after GoT. He plays the astute strategist Tyrion Lannister in the hit HBO series.

Plot details are under wraps aside from the film focusing on the mythical character that Dinklage would play.

The character first appeared in a Brothers Grimm tale and follows a miller who lies to the king, telling him that his daughter can spin straw into gold. The king calls for the girl, shuts her in a tower room filled with straw and a spinning wheel, and demands she spin the straw into gold by morning or he will cut off her head. When she has given up all hope, an imp-like creature, a.k.a. Rumpelstiltskin, appears in the room and spins the straw into gold in return for her necklace.

It is not known if the story will be set in modern times or its original setting.