Hayley sends the family into chaos after she and her old boyfriend run off and elope. Stan offers a reward to whomever stops the couple, sparking a cannonball run through town in order to stop them in the "100 A.D..

Stan and Francine have had the scariest haunted house on the block for eight years running, but when one of their neighbors provides some stiff competition, Stan ups the ante with a "killer" set-up. Meanwhile, Steve falls head over heels for his overprotective friend's younger sister and competes to win her heart in a Halloween showdown.