Bold Films will also produce and finance the movie, reported Variety.
Chris Prynoski is directing from a script by Jess Rotter, Michael Reich, Jessica Hundley and Mike Pinkney.
"Foxy Trotter" is a motorcycle-riding, rock and roll photographer in the early '70s on a mission to capture the perfect rock photo.
Portman will voice Foxy's best friend, Ronnie, who is seduced by her arch-rival Gunter and offered as a sacrifice in Gunter's evil plan to destroy the universe.
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