Les Misérables; colloquially known as Les Mis or Les Miz (/leɪ ˈmɪz/), is a sung-through musical adaptation of Victor Hugo's 1862 novel of the same name, by Claude-Michel Schönberg (music), Alain Boublil and Jean-Marc Natel (original French lyrics), and Herbert Kretzmer (English lyrics). The original French musical premiered in Paris in 1980 with direction by Robert Hossein. Its English-language adaptation by producer Cameron Mackintosh has been running in London since October 1985, making it the longest-running musical in the West End and the second longest-running musical in the world after the original Off-Broadway run of The Fantasticks.

Set in early 19th-century France, Les Misérables is the story of Jean Valjean. After 19 years as a prisoner, Valjean (Hugh Jackman) is freed by Javert (Russell Crowe), the officer in charge of the prison workforce. Valjean promptly breaks parole but later uses money from stolen silver to reinvent himself as a mayor and factory owner. Javert vows to bring Valjean back to prison. Eight years later, Valjean becomes the guardian of a child named Cosette after her mother's (Anne Hathaway) death, but Javert's relentless pursuit means that peace will be a long time coming.Along the way, Valjean and a slew of characters are swept into the June 1832 Rebellion in France, where a group of young idealists attempt to overthrow the government at a street barricade in Paris.