Set in unoccupied Africa during the early days of World War II: An American expatriate meets a former lover, with unforeseen complications.
In World War II Casablanca, Rick Blaine, exiled American and former freedom fighter, runs the most popular nightspot in town. The cynical lone wolf Blaine comes into the possession of two valuable letters of transit. When Nazi Major Strasser arrives in Casablanca, the sycophantic police Captain Renault does what he can to please him, including detaining a Czechoslovak underground leader Victor Laszlo. Much to Rick's surprise, Lazslo arrives with Ilsa, Rick's one time love. Rick is very bitter towards Ilsa, who ran out on him in Paris, but when he learns she had good reason to, they plan to run off together again using the letters of transit. Well, that was their original plan....
Rick never says "Play it again, Sam." He says: "You played it for her, you can play it for me. If she can take it, I can take it so Play it!". Ilsa says "Play it, Sam. Play 'As Time Goes By"'. The incorrect line has become the basis for spoofs in movies such as A Night in Casablanca (1946) and Play It Again, Sam (1972).