Born during a Christmas blizzard, Jane Williams receives a rare gift: the ability to see true love. Jane has emerged from an ailing childhood a lonely, hopeless romantic when, on her twenty-ninth birthday, a mysterious greeting card arrives, specifying that Jane must identify the six types of love before the full moon following her thirtieth birthday, or face grave consequences. When Jane falls for a science writer who doesn't believe in love, she fears that her fate is sealed.