Jack loves Kitty and Charley loves Amy. They invite the ladies to meet Charley's wealthy aunt from Brazil, "where the nuts come from". Canceling her visit at the last minute, the millionaire aunt sends the boys into cataclysmic confusion. What do they do now? The problem is solved by drafting their feckless Oxford undergrad pal, Fancourt Babberley, into a black satin skirt, bloomers and wig. As "Charley's Aunt", this charming frump is introduced to the ladies, to Jack's father and to Stephen Spettigue, Amy's guardian. Classic comic confusion ensues as the real aunt turns up, eventually leading to a hilariously happy ending for all!