When a psychic warns Jason and Mandy they're in danger from something "dropping", Figgis Green's 50th Anniversary Tour of England is plagued by a series of seemingly-unrelated mishaps -- including a falling gargoygle. But after Jason is attacked in Cambridge and nearly drowns while he's punting on the river, and a false fire alarm in their hotel results in a theft from Mandy's room, it becomes very clear they're being targeted by someone with a serious grudge. When the band plays a gig at a private estate in Tunbridge Wells, that someone finally makes themselves - and their deadly intentions - known. Jason must rely on his instincts, a mysterious Instagram follower who calls herself his "guardian angel, " and the ghost of a Battle of Britain airman, who may or may not share his DNA, to survive.