Ang Lee, the director who pushed boundaries with his controversial Brokeback Mountain, has just earned an NC-17 rating for his latest film Lust, Caution. According to Variety, Focus Features, the studio behind the erotic espionage thriller, is okay with releasing it as-is.

The film was co-written by Focus' CEO James Schamus and Wang Hui Ling. The plot is based on a short story by Eileen Chang, and revolves around a shy Chinese drama student who gets pulled into an assassination plot against a Japanese collaborator during WWII. The film, which is in Mandarin, is Focus' main Oscar hopeful.

Schamus stated, "As with so many of his previous films, Oscar-winning director Ang Lee has crafted a masterpiece about and for grown-ups." While the MPAA didn't state why the film got an NC-17, it is known that the film does depict extended and vigorous lovemaking in a variety of provocative sexual positions.

The film will premier at the Toronto Fest. Then it wil play Gotham on September 28th. It will expand to additional cities on October 5th.