In the year 1865, in parallel universe 5501, Batman helps foil an assassination attempt on the life of Abraham Lincoln by a steampunk armored John Wilkes Booth. Bat-Mite has grown weary of Batman: The Brave and the Bold, deeming its formula to be tired and repetitive, so he concocts a scheme to make it so bad that the network will have to cancel the show to make way for a darker one. Can Ambush Bug thwart his plan before it's too late?