Scooby-Doo! Mystery Incorporated S02 E01 The Night the Clown Cried

"The most hauntedest place on Earth."

Mystery Inc. has disbanded. Crystal Cove is attacked by a Man-Baby called Crybaby Clown. Mayor Nettles is approached by a mysterious figure who gives her the files on Mystery Inc. while stating that she has to get Mystery Inc. back together.