Thirty years after rising to global stardom in The Wizard of Oz, showbiz legend Judy Garland arrives in London to perform a five-week sold-out run at The Talk of the Town. While preparing for the shows, Garland battles with management, reminisces with friends and adoring fans, and embarks on a whirlwind romance with soon-to-be fifth husband Mickey Deans, all while bravely struggling to overcome intensifying anxiety and physical decline.

Adapted from the Tony-nominated stage play, this is an examination of contemporary Britain-part political thriller, part family drama. After the Queen's death, Prince Charles finds himself wrestling his conscience over a bill to sign into law, resulting in a constitutional and political crisis.