Seventeen-year-old Caitlin Singleberry is a proper Christian teenager and member of a family singing group, but today she has been given a truly impossible assignment--keep her cousin Heller Harrigan, Hollywood wild child, out of trouble for the last weekend before her first big movie debuts.

Josh Stephenson's thirteenth year starts with a baffling sequence of events, including an odd gift from his estranged father, the arrival of his flirty seventeen-year-old female cousin, locker-room teasing about certain embarrassing anatomical changes, and wondering if dreams of love can ever come true.