Whitchthorn was the ruler of all the Fey living in Kryptgarden. When he was a prince, he lived with his spouse, the dryad Ishaldra, who balanced his evil inclination with her good nature.
The Green Dragon Mask is recovered from the lair of Claugiyliamatar in Kryptgarden Forest. Old Gnawbones himself is injured while blows were struck against Thay, the Cult of the Dragon, and Zartruss hobgoblin clan.
Claugiyliamatar near the realm of Whitchthorn, an Unseelie Lord. His presence corrupts Ishaldra, the dryad spouse of Whitchthorn and Ishaldra’s treant bodyguard. Whitchthorn, an archfey and now fey king, unleashes his evil against the dragon, but Old Gnawbones is too powerful.
Ultimately, an adventuring party of Harpers hired to defeat Claugiyliamatar gains an audience with the fey king and Whitchthorn agrees to aid them to defeat Old Gnawbones, but only if the adventurers make a pact with him.