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British soldiers force a recently captured IRA terrorist to cooperate with them and then assign him to go undercover with a gang of terrorists and prevent them from killing the U.S. President. But the spy isn't in long before he realizes that the first plot is but a ruse for a more sinister scheme that could result in trouble between China and Great Britain. The operative then learns that somewhere a crucial agreement between the countries exists but that it has been lost. Now it is up to him to locate it before the terrorists.