The Sinai desert, 1973. As the Yom Kippur War flares into life, a state-of-the-art Soviet MIG fighter is racing at breakneck speed over the arid scrublands below - and promptly disappears. NASA Flight Controller and former US Navy test pilot Kaz Zemeckis watches the scene from the ground - and is quickly pulled into a dizzying, high-stakes game of spies, lies and a possible high-level defection that plays out across three continents. The prize is beyond value: the secrets of the Soviets' mythical 'Foxbat' MiG-25, the fastest, highest-flying fighter plane in the world and the key to Cold War air supremacy. But every defection is double-edged with risk, and Kaz must tread a careful line between trust and suspicion.