As the player ventures into the manor, the dungeons below it and the surrounding lands, they find their Ancestor’s memoirs telling of the terrible deeds he had done in pursuit of knowledge and power, as well as personal desire. Eventually, the player is able to enter the Darkest Dungeon itself, the source of the land's corruption, taking steps to reveal its ultimate form. Within the deepest chamber, the player encounters the disembodied spirit of their Ancestor, who now remains as "an Avatar of the Crawling Chaos. " After defeating the Ancestor's apparition, the party battles the Heart of Darkness - which the Ancestor reveals to be the heart of the planet itself. The party manages to defeat its physical form at great cost, but the Ancestor's spirit reveals to the player that this has only delayed its inevitable awakening and, by extension, the end of the world. The Ancestor claims that this is merely part of an endless cycle in the player's lineage and that the player will eventually meet the same fate as he, and their descendants onward. The Ancestor then accentuates this cycle by repeating his first words from the start of the game: "Ruin has come to our family. "