A duo of fast-rising French stars, Guillaume Gallienne (“Yves Saint Laurent”) and Adèle Exarchopoulos (“Blue is The Warmest Color”) are set to topline “Down by Love,” a romance drama directed by Pierre Godeau.

Penned by Godeau, the film follows Jean, a renown prison director whose career in the administration is on the rise. But the arrival of a young detainee, Anna (Exarchopoulos), threatens to shatter his stable life as the pair engage in a forbidden and passionate romance.

Pic is produced by Pan-Europeenne and LGM Cinema, the outfit behind Gallienne’s “Me, Myself and Mom,” which won five Cesar awards. LGM, best known for mainstream French fare, recently launched a label dedicated to arthouse movies.

A young director, Godeau previously helmed “Juliette,” a romantic comedy with Astrid Bergès-Frisbey.

Exarchopoulos, who is best-known for her Palme-d’Or winning performance in “Blue is the Warmest Color,” recently completed the shooting of Sean Penn’s “The Last Face.”

Studiocanal handles international sales to “Down by Love” and will distribute it in France.

The nine-week shooting has just started in the Paris region.