Unable to attend school while she battles cancer, fifteen-year-old Kaleigh Wyse tries to complete her classes online by correspondence. Developing a science project on astrology, Kaleigh enlists other online learners as study participants. What starts as a collaborative and supportive project based on the scientific method, slowly becomes unwieldy and then flawed when it is apparent that all the project participants are hiding vital clues about their identities. As Kaleigh struggles with the effects of chemotherapy and radiation, she is forced to examine the assumptions she has made about others and the manner in which she presents herself to the world.