Two coworkers, Natalie Myers and Danny Paulson, are falling in love. They plan to assemble both Myerses and Paulsons on a gathering before Danny can propose to Natalie. But, the gathering becomes a disaster, after Natalie's father, John, meets Danny's father, Victor, for the first time. John, who was a CIA agent during Cold War, recognizes David as his Soviet rival and KGB agent. While both of them accept to not disrupt each other children's life, they also try to beat each other relentlessly.
Danny Paulson: 29-year-old surgeon
Natalie Myers: 29-year-old pediatrician and Paulson's girlfriend
John Myers: Natalie's father and former CIA agent stationed in Berlin
David Paulson/Viktor Illyevich Pavlov: Danny's father and former KGB agent in Berlin, but finally decided to escape to U.S., changing his surname from Pavlov to Paulson
Mary Paulson/Eve Robertson: David's wife and Danny's mother, who was CIA agent with order to kill Victor in the past, but she fell in love with him and faked her own death to live with David. She turns out to be John's former love interest.
Elise Myers: John's wife
Michelle Myers: John and Elise's daughter and Natalie's older sister
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