Over time, countless hunters have visited the Dream. The graves here stand in their memory. Hunter's Dream is also home to the Chalice Ritual, which allows you to delve into the Chalice Dungeons.
The Plain Doll lives in the Dream and states her purpose is "to look after you". Gehrman, the First Hunter also resides in the Hunter's Dream, serving only to advice new Hunters. The last inhabitants of the dream, the Messengers, are "little ones" that find hunters, worship, and serve them.
Eventually, dawn will break, and the night, and the Dream, will end. Gehrman presents the final test for the hunter and awaits you at the foot of the great tree in the adjacent field of flowers.