Yetu holds the memories for her people --- water-dwelling descendants of pregnant African slave women thrown overboard by slave owners --- who live idyllic lives in the deep. Their past, too traumatic to be remembered regularly, is forgotten by everyone except for the historian. This demanding role has been bestowed on Yetu, who remembers for everyone, but the memories are destroying her. So she flees to the surface and discovers a world her people left behind long ago. Yetu will learn more than she ever expected to about her own past --- and about the future of her people. If they are all to survive, they’ll need to reclaim the memories, reclaim their identity --- and own who they really are.