"Oliver!" is a musical based on the novel "Oliver Twist" by Charles Dickens. It tells the story of a young orphan named Oliver Twist who escapes from a workhouse and encounters a group of juvenile thieves led by the cunning Fagin. The musical features memorable songs and explores themes of poverty, friendship, and the struggle for a better life. Set in 19th-century London, the story follows Oliver's adventures as he seeks a family and a place to belong. Along the way, he meets various characters, including the kind-hearted Nancy and the villainous Bill Sikes, highlighting the contrasts between good and evil in society.