UCLA college student Jonathan Moore (Anthony Edwards) is playing a game called "Gotcha" (popular on mid-1980s college campuses as "Assassin" or "Tag"), wherein the players are all assigned a mock "hit" on another player by use of a harmless paintball gun. Moore and his apartment roommate Manolo go on a vacation to Paris, France. After touring some of Paris, in a cafe Moore meets Sasha Banicek (Linda Fiorentino), a Czechoslovakian girl. Eventually, Jonathan has intercourse with Sasha, losing his virginity.
　　Jonathan decides to leave Manolo (who is heading to Spain) and go with Sasha to West Berlin to spend more time with her. Jonathan believes that he is in love with Sasha. There, Jonathan and Sasha continue to have sex and even go to an Oktoberfest beer gathering. One night, Sasha tells Jonathan that she has to go to East Berlin to pick up a package. One night after arriving in East Berlin, Sasha leaves their hotel room and walks to dar