Top Secret!

Nick Rivers (Val Kilmer), an American rock star, travels to East Germany to perform at a cultural festival, which secretly serves the East German government as a diversion for a military operation. At a dinner, Nick encounters Hillary Flammond, a member of the local resistance movement who is attempting to avoid the authorities. He pretends to be her date to get to know her, and performs an impromptu song and dance, mistakenly thinking he was asked to do so, to the delight of Hillary and the diners. Nick later sees Hillary at a ballet, where she expects to rendezvous with the resistance leader, but is met by the police instead. He saves her and they try to escape, but Nick turns himself in so that Hillary can get away.