It is 2088, and life in the city where Sala lives is hard: it's overcrowded, there are no jobs, and no one can leave, because the world outside is contamined. Sala is lucky, because she has Cham, and they love each other. But when Cham gets the chance for a new future, and Sala begins to make some extraordinary discoveries, will they agree about how to move formwards and what to do with their lives?