The gang is attacked by a hi-tech assassin called the Obliteratrix, who tells them that they all have to die. This leads the gang to investigate the mystery of the Cursed Treasure further with the assistance of Professor H.P. Hatecraft (who suspects his rival Regina Wentworth to be Obliteratrix). Along the way, they discover the fate of the original Mystery Incorporated. In the end, Angel Dynamite (Cassidy Williams) traps the Obliteratrix and they solve the mystery. Plus, unknown to the gang, a mysterious creature called “The Freak of Crystal Cove” watches them from the shadows, saying that in the end, the curse will end with them.