After the members of Mysteries S.A. They lose a case by catching an innocent man, they are forced to withdraw from criminal investigations. But, soon after, his old friend Vincent Van Ghoul needs help, so he gets the team back into action. It all started one summer when Scooby-Doo, Shaggy and Daphne secretly hunted down 12 of the most spooky ghosts in the world, though they could not catch the most evil of all … the 13th ghost. With the 13th ghost loose, the gang You will have to look beyond the hidden secrets and resolve some outstanding issues.