Jamie Dornan is ready to try his hand at a leading role in a big, based on a true story, Hollywood production.

The "Fifty Shades of Grey" star has signed on to act opposite Cillian Murphy in Sean Ellis' World War II film "Anthropoid, according to IndieWire.

For Dornan, it's quite the transition from portraying Christian Grey-- the "Fifty Shades of Grey" series is based on "Twilight" fan fiction.

The war movie revolves around two Czech soldiers ordered to assassinate Nazi and Holocaust engineer Reinhard Heydrich.

Production for "Anthropoid" will begin in Prague this summer.

Looking to future Dornan projects, he will be returning for the "Fifty Shades of Grey" sequel as the titular character.