Episode Description: Beware, spoilers! To read - hover over the text.
In the TARDIS shows up out of nowhere a girl in a wedding dress that doesn't understand how I got here and asks to return her to the wedding, what the Doctor does. It turns out that the bride's name is Donna, and it contains particles of Juana that the time Lords long ago completely destroyed. Because these particles pulls Donna into the TARDIS, and her fiance turns out to be the accomplice of the Empress racnoss.