Nuae thought it would be cool to go off and rob a graveyard, which the state has barred access to. On the verge of escaping, guards discovered him, and pursued him into the river. Despite doggy paddling frantically, Nuae was swept over the edge of the waterfall. He tried to walk back to the keep, but submitted to the elements and exhaustion, and died.
The party gathered the money to resurrect Nuae, who decided that his grave-digging and the public shaming were too much to handle, and he quit the party.
Despite his retirement, the party was punished for his actions in the Keep. The Blood Hawks were barred from the high town, and were fined.
The remaining members of the party came to a realization: Their shame is too much, their financial situation too dire. Something must be done. We will travel to the Mines of Chaos, and we will return with glory, or we will not return at all.