The Angel Islington has charged Richard and Door with finding a sacred key that will answer all their questions. But getting it involves the dinner party from hell, and an ordeal from somewhere worse. Meanwhile, Croup and Vandemar show their tastes for the finer things in life while developing an unhealthy interest in the Marquis.

With the sacred key in his possession, only one person stands in the way between the Angel and his ultimate ambition - Door. As the apocalyptic climax looms, everyone faces their own destinies.