Professor Sherman Klump is getting married. And the Klump family could not be more delighted. His fiancee Denise is thrilled to become a Klump, and with her appetite she'll fit right in; Mama thinks it's fabulous; Papa's less grouchy; Granny's relieved that Sherman, at long last, will soon be enjoying the pleasures of intimate relations; Ernie's belligerence has been momentarily simmered, and Ernie Jr. simply can't wait to feast at the wedding. But Buddy Love; well, Buddy is another matter entirely...