While her father fought for the communist regime of North Viet Nam, Yung grew up in the South, abundant with natural beauty and citrus harvests. But as daughter of Senator Dang Quang Minh of the NLF, Yung faced the anguish of a child of the revolution.

Like her mother, Yung could never support the communism her father gave his life to. Eventually, she worked for the south Vietnamese and American armies, then fell in love with a US Navy pilot; they moved to the United States, and, in exchange for her family's rescue from a fallen Sai Gon, Yung became a spy for the CIA.

Utilizing her experience with international espionage, Yung took on an even more dangerous mission: a Spy-Catcher for the FBI under the code name: Keyseat.

From one family... split by ideology in a war-torn country... emerges a brave, resilient woman. Like a river of love over ravaged land... flows a story of A Thousand Tears Falling.