Selena Lucy Landry (named for a ship, as every sailorâs child should be) has been frightened of the water ever since she lost her father at sea. But with no one else to care for her, sheâs sent to foster with the Martinsâa large Anishinaabe family living on a lighthouse in the middle of stormy Lake Superior. The Martin family is big, hard-working, and close, and Lucyâwho has always been a dreamerâstruggles to fit in. Can she go one day without ruining the laundry or forgetting the sweeping? Will she ever be less afraid of the lake? Although life at the lighthouse isnât what Lucy hoped for, it is beautifulâships come and go, waves pound the rocksâand it has one major advantage: itâs near the site of a famous shipwreck, a shipwreck that went down with a treasure her father wanted more than anything. If Lucy can find that treasureâa priceless ruby necklaceâwonât it be like having Papa back again, just a little bit? But someone else is hunting for the treasure too. And as the lighthouse company becomes increasingly skeptical that the Martins can juggle Lucy and their duties, Lucy and the Martin children will need to find the necklace quicklyâor they may not have a home at all.