The Gael Tribe is in need of funds so Arawn decides to take Arthur and the others to his tomb where an abundance of treasure is buried. However, when they arrive they are attacked first by a group of Talos and then by an ogre. Rhiannon sees a vision of King Pwyll and an adult Primula before Arawn's tomb. Arthur makes a connection between a depiction of the Creator Watos and the Twelve Angels of the Heavens with Arawn. Meanwhile, Gaius is called before the Imperial Senate and accused of treason.

Feeling the threat of the Empire, the Gaels venture into the forest to head them off before they have a chance to make the first attack. As they ventured deeper, Arawn and Ogam realize that the area is enchanted with the power Gravitas (God's Gravity). Soon, they stop because a swamp is blocking their path. From the water rose their slain Gael comrades who were turned into "the living dead" by Creon's use of the Urn of Hell. Swords and arrows were completely useless against them, and Llyr and Rathty were growing weaker because of Gravitas' effects on elves. Ogam concludes that the living dead are similar to the enemies deployed in the great ancient battle who tortured the elves. He proposes to use his Fire of Genesis to defeat them but Arawn stops him because he deems there was no need to use such power against lowly foes. Arawn then uses a divine spell and calls upon Candidus, obliterating the enemy immediately. As a result, he has been purified and appears pure white, similar to what he "looked like in the past". Also, the spell has left Arawn weak with burns on his body. The white light Arthur sees returned the memory of his father being killed by a pure white being who called himself "Arawn". In a fit of rage that possesses him, Arthur stabs Arawn in order to fulfill a promise he made to kill the one who slayed his father. Arawn is left unconscious by his injury, and Arthur flees full of shame and guilt. The entire incident is reported to Gaius as he prepares to launch a full-scale invasion of Albion.

As Arawn and Ogam head towards Palladium with the rest of the tribe and their allies, Arthur along with Riannon, Octavia and the elves attempt to retrieve Dyrnwyn who is capable of killing a god, the brother sword to Arawn's. Upon touching the sword, Arthur is shown a flash back of Arawn's meeting with Pwyll and how Dyrnwyn came into the elf king's possession. While watching the scene, Golems begin to surround them and the group, bar Arthur, attempt to hold them back. After the scene of King Pwyll and Arawn's meeting, he is shown Arawn who was nearly killed at the final battle and how both he and Pwyll used Dyrnwyn to seal the world off from the Heavens before Arawn had to be put to sleep to recover. Learning the truth of the world, Arthur manages to draw Dyrnwyn, ala sword in the stone style, whereby the entire area is encapsulated in a blinding white light. Dyrnwyn changes colour to its former glory and all of the Golems disintegrate. The group now head towards Palladium to rejoin their friends.