1941: In the jungles of Japanese-occupied China, Naval Intelligence officer David Williams stumbles across a journal filled with information hinting at a covert, Japanese attack on American soil. Back in the U.S., Williams briefs his superiors on the discovery, but his theory of a sneak attack is coldly rebuffed by his commanding officer. After probing deeper, and with a fellow intelligence officer turning up dead, Williams becomes convinced that a wider conspiracy is at work - one leading all the way to the upper echelons of the American government. As a fateful day in December 1941 draws near, Williams is forced to make a decision: follow the orders of his superiors and ignore the information, or commit treason by acting in accordance with his conscience.