Luna Begay is as studious and serious about her Aboriginal heritage as her sister, Issy, is outgoing and fun. When Issy convinces Luna to go with her to a party full of rich kids, Luna is surprised to end up talking with Jon, who is charming, sophisticated, and very good-looking. But the night turns bad when Jon drugs and rapes Luna.

Feeling guilty and ashamed that she will be perceived as an "Indian slut," Luna doesn't tell anyone and remains in denial until Issy figures out that Luna is pregnant. Knowing that her decisions will affect her parents and Issy as much as her own future, Luna has to work out how to deal with the consequences of that one night, and she has to do it fast.