From the Bongo Archives, when a psychotic clown sidekick comes to town with a plan to exact his revenge upon his archenemy, no one expects that vengeance-seeking harlequin to be Sideshow Cecil, Bob's brother, with a plan to kill his own archenemy - Lisa Simpson! Then, Bart's treehouse gets condemned when the tree in the Simpsons' backyard develops stump rot, and it's up to Bart and Milhouse to stand in the way of the bulldozers. Also, Radioactive Man finds himself in an alternate reality after an emergency stop in a convenient Portal Potty.