In the previous episode, as Batman is about to be forced into saying “I do” to Marsha, Queen of Diamonds, Aunt Harriet Cooper and Alfred Pennyworth, posing as “Mrs. Batman” and her “lawyer” respectively, storm up to the altar. The prank was actually on Marsha as “Mrs. Batman’s” lawyer provides a fake marriage certificate (thanks to theBatcomputer, which Alfred worked on) to the minister conducting the wedding, showing that Batman is still married. The minister refuses to finish the wedding (because Batman would have committed bigamy had he married Marsha), thus allowing Batman, and Alfred to quietly leave the church in their "newlywed" Batmobile.