On the eve of their children's wedding, two NYC in-laws—straight-laced Sheldon Kornpett and hot-headed Vince Ricardo—find themselves caught in an escalating comedy of errors. What begins as pre-wedding tension spirals into a wild adventure involving the CIA, the Treasury Department, and shadowy Central American political figures. Directed by Arthur Hiller and written by Andrew Bergman, this 1979 comedy stars Peter Falk, Alan Arkin, and Richard Libertini in a film that transforms family chaos into international intrigue.