In an alternate universe of white suburban America, one nine-year-old girl's childhood is cut short when her parents find her a marital match: a socially-awkward businessman with a ridiculous mustache. Although she surrenders to her mother's housewife training, when the day of the wedding arrives, she tries to escape, endangering her and others in the process.

Three girls in three different worlds, ranging from New York City to a fantasy kingdom, all grow diamonds in their bodies when they are sad, and each is exploited for this in a different way. As they grow older, this ability determines the shape and outcome of their lives.