In a very famous play the actors say "Something is rotten in the state of Denmark" and "Heaven will direct it". What do those actors refer to?
From Hamlet, Horatio and Marcellus are discussing whether they should follow Hamlet or not. "Let’s follow. 'Tis not fit thus to obey him." "Have after. To what issue will this come?" Horatio is asking Marcellus what it all means, and where it all ends. To which Marcellus responds "Something is rotten in the state of Denmark" which is referring to the whole situation, and how Hamlet's imagination is making him crazy. Horatio responds "Heaven will direct it" or "we should let god take care of it." Marcellus decides against this and says "Nay, let's follow him."
tl;dr they are talking about Hamlet himself.