This book is about the appearance of the Fort of the Damned… signed by 'Umbra'.
Stitcher Jim believes that the appearance of the Fort of the Damned is the result of a ritual using the stolen Dark Relics. Pirates have found that the coloured Flames of Fate can be used to 'wake' the twisted Fort and repel the skeletons seeking to use it. But what's really going on? Such determination to get into our world… but are we stopping them or helping them by waking the Fort?!