Legendary Pictures has purchased the fantasy spec screenplay Slayer from Martin Helgeland, the son of Oscar-winning screenwriter Brian Helgeland (L.A. Confidential).

The story is set in modern day, and centers on a doctor whose father recently passed away. He discovers that his estranged dad was actually a slayer of dragons and other evil creatures, and comes to learn that he must also become a slayer. Martin Helgeland currently attends Loyola Marymount University in Los Angeles, and Slayer is his first screenplay.

Brian Helgeland will executive produce, with Alex Garcia and Alex Hedlund overseeing the project for Legendary Pictures.

No production schedule was released for Slayer.