Long ago, the Monarch Northstrider created a world of his own. This pocket world, Ghostwater, is where he kept some of his most valuable items; however, that pocket world is now dying. The stability of that world was damaged in the events of the last book, and the Skysworn are determined to retrieve some of the valuables before they are gone. It is not clear how long that world has left, but Lindon, Yerin, and Mercy are all part of the team sent to retrieve those items. It doesn't take long for them to become separated, leaving Yerin and Mercy stuck outside, with Lindon trapped on his own inside the dying world. So is this a worthy story or is it just a contrived way to split off Lindon and send him on a side quest that allows him to catch up in power to Yerin?
Ghostwater - a side quest in the Cradle series