When Bruce Wayne receives the man of the year award, fellow billionaire Lex Luthor becomes jealous and decides to run for President. To create the atmosphere for his type of fear-based politics Lex recruits the Joker to perfect a Black LEGO Destructor Ray which wreaks havoc on Gotham. As Lex destroys Batman's tech, Batman reluctantly turns to Superman for help.

The scares never end at the world's biggest mini-golf course, where reigning champ Shaggy plays A Terrifying Round with a Menacing Metallic Clown, and scores. Then, the gang heads to Dooville to visit Scooby's family, and arrives just in time to attend Professor Phyantasmo's Circus Fantastique, where the calliope music is hypnotizing the crowd to join their 'circus of living evil!' Finally, our crime fighters encounter Bedlam in the Gig Top at a jinxed...