Harvey Dent was the District Attorney of Gotham City, and a close, personal ally of Batman. Unfortunately, the notorious gangser, Boss Maroni, threw acid in Dent's face, severely disfiguring it on the left side, leaving the right side unharmed. Because of his new appearance, Dent underwent a mental breakdown and became the insane crime boss Two-Face. 

This graphic novel changes Two-Face a little bit. Harvey's therapy is to replace his coin (two choices) for a die (six choices) He then is given a tarot deck (78 choices). It messes with Harvey. He cannot even decide to go to the bathroom on time. In this graphic novel, he pees on himself.