"Deep" was written by Jack Barton Mitchell and takes place after World War III. The main protagonist, a man named Sullivan who captains a nuclear sub, makes contact with a group of superior scientific intelligence called the Wayfarers. They have the power to save the earth, but it may come with a high price.
The Source-powered movie will be produced by Brown Bag's Darragh O'Connell and Gregory R. Little, who heads Brown Bag's L.A. production office. According to O'Connell, Valve's tools and technologies will provide Acker and Brown Bag real-time rendering and editing, simplified character animation and economical lighting.
Source: Toms Hardware