Mystery Inc. withdraws from solving crimes after botching a case. When Vincent Van Ghoul contacts the gang about an unfinished investigation from Daphne, Shaggy and Scooby's past, the gang springs into action to finish the job that involves catching the 13th Ghost that escaped from the Chest of Demons and is still at large.
One year ago Lisa's boyfriend Kurt, the father of her infant child, went missing in the California Desert with five of his friends. When Lisa is contacted by a retired sheriff with his own insights to the case, Lisa and he brother Karl head to the desert, guided by the video footage recovered in Kurt's tent. Together, they hack through the lies, evasions and threats to unlock a dark mystery.
A gangster tries to clean up his life to care for his sick sister and nephew. But someone targeting him accidentally kills them instead. In shock, he decides to take revenge.
Years of carrying out death row executions have taken a toll on prison warden Bernadine Williams. As she prepares to execute another inmate, Bernadine must confront the psychological and emotional demons her job creates, ultimately connecting her to the man she is sanctioned to kill.