Good Luck (Good Luck #4)

Reeling from their recent discovery that Joseph is more than what he seems, The Unfortunates must focus on their mission, but in order to have any chance to save the world they must get to the Core.

Meanwhile, the Secretary of Luck and his cronies have invaded the Kismet Zone after our team's disappearance and may ruin everything. And what do Ursa and Cassiopeia have to do with the final mission of the Core?