Enter the world of underwater history and mystery to see what lies beneath Lake Superior through the eyes of a child.  Meet Chase, a boy afraid of deep water but fascinated by shipwrecks, and Bri, a girl with remarkable knowledge about the wrecks, storms and heroes of the freshwater sea.  Using a magical map, the two launch and adventure that transport them to some of the most stories wrecks in the Big Lake.  What storms claimed the most vessels?  How did each ship sink?  Who lived?  Who aunts their last known location?  What happened to those ships that simply "went missing"?
With Bri's guidance, Chase learns that deep water holds exciting secrets as well as the most harrowing adventures.