Warner Bros are reported to be working on a sequel to one of Hollywood’s best loved classics: Casablanca. The original, iconic movie was released in 1942 and starred Ingrid Bergman and Humphrey Bogart. Set in World War II, it told the tale of a man forced to choose between his love for a woman, or helping her husband escape Casablanca, to continue his fight against the Nazis.

The rumor currently doing the rounds is that Warner Bros are working on the next stage in the tale, with a working title of either Return to Casablanca or As Time Goes By. The plot is said to revolve around Richard Blaine (the illegitimate son of Humphrey Bogart’s character Rick Blaine and Ingrid Bergman’s Ilsa Lund). At the end of the original movie, those two were famously separated and the new movie finds Rick on the hunt for his biological father, to discover what became of him.

The new movie was the brainchild of Cass Warner, The Independent reports. The late Howard Koch wrote the guidelines for a sequel back in the 1980s. Cass Warner, the granddaughter of the Warner Bros founder Harry Warner, has seemingly been pressing for the sequel to be made. Cass said, of the new movie “There will be flashbacks, but it's a film about the next generation; a son going back to find what happened to his parents. I wouldn't want to touch the original for the world,” though that may be of little reassurance to film purists.