In 1863, fifteen-year-old Claire, the daughter of an Irish mother and an African father, faces ugly truths and great danger when Irish immigrants, enraged by the Civil War and a federal draft, lash out against African-Americans and wealthy "swells" of New York City.

Finley, an unnaturally quiet boy who is the only white player on his high school's varsity basketball team, lives in a dismal Pennsylvania town that is ruled by the Irish mob, and when his coach asks him to mentor a troubled African American student who has transferred there from an elite private school in California, he finds that they have a lot in common in spite of their apparent differences.