LOS ANGELES: Natalie Portman is joining Danny McBride and James Franco in the fantasy comedy "Your Highness."

Written by Ben Best and McBride, the Universal Pictures project centers on an arrogant, lazy prince (McBride) who must complete a quest to save his father's kingdom. Joining him on the quest is McBride's more heroic brother, played by Franco.

Portman will play McBride's love interest, a warrior princess.

Director David Gordon Green ("Pineapple Express," "All the Real Girls") is shooting the film this summer in Northern Ireland.

Portman is working on "Hesher," an indie drama that marks her inauguration as a producer. She next stars with Jake Gyllenhaal and Tobey Maguire in the drama "Brothers," a remake of Susanne Bier's Danish film.