After most of Earth's population has left for other planets, life is simple in the isolated village of Tober Cove. Fullin, a twenty-year-old musician, lives well off of his craft. But soon he must make a life-changing decision that all residents of Tober Cove must make. Up until their twenty-first birthdays, the people of Tober Cove change gender every year. But at the age of twenty-one, they must commit to being male, female, or a Neut (essentially a hermaphrodite) for the rest of their lives. As Fullin nears the moment of decision, his faith becomes shaken when he uncovers secrets that distort his beliefs.