Jim is getting to grips with his father's rather unusual job at the Dead End Office and is keeping the truth secret as a promise to Dad. But when Jim sees that Will's grandma is next on the list of Death Dates, he springs into action. Even though Granny Maggot is smelly, mean-spirited, and VERY unfriendly, his best friend Will adores her. Jim has to do something! If the boys can keep Will's granny safe until midnight, can they save her life?