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.

After an argument between Stan and Francine breaks out, Stan suggests they go see a counselor, who hypnotizes Francine and reawakens her lifelong dream of being a comedian. Meanwhile, back in Langley Falls, Steve brings home a potential love interest for Klaus.