At fifteen, Vivian Hostadt is the woman of the house. Her mother is dying of brittle diabetes, and everyone is telling her what girls should and should not do. Vivian's loyalty to her heartbroken family is steadfast, but she is coming of age and must find her own way. In Vivian's town in the 1930's, ski jumping is exclusively a boy's sport. Girls don't jump. When Jeb Rettlan offers Vivian the chance to jump, she must do so in secret, at night. Jumping upon maple-carved, non-release skis is filled with danger, and doing so by moonlight, with the boy who makes her heart race, is especially risky.