During the Cold War, an American scientist appears to defect to East Germany as part of a cloak and dagger mission to find the formula for a resin solution—but the plan goes awry when his fiancee, unaware of his motivation, follows him across the border.

During the Cold War, an American scientist appears to defect to East Germany as part of a cloak and dagger mission to find the formula for a resin solution—but the plan goes awry when his fiancee, unaware of his motivation, follows him across the border.