Damon Fields is born to a single
teenage mother in a
trailer home in
Lee County, in the
Appalachian Mountains of
Virginia. He is nicknamed "Demon Copperhead" for his red hair, inherited from his
Melungeon father who drowned at a swimming hole called the Devil's Bathtub. Throughout the book, Demon is fascinated with the ocean and longs to see it one day. Demon spends much of his time with their neighbors, Mr. and Mrs. Peggot, who are raising their grandson Matt Peggot (nicknamed Maggot). Maggot and Demon are the same age and become best friends. When Demon is in elementary school, his mother begins a relationship with a cruel
trucker named Stoner. One summer, the Peggots take Demon on a trip to
Knoxville, where he meets and is captivated by Maggot’s aunt June and her adopted daughter Emmy. While he was away, his mother married Stoner, whose behavior becomes even more abusive. She relapses into her former drug addiction and
ODs. Stoner pays for her to be sent to
rehab and Demon is put in short-term foster care. His foster home is at Creaky Farms, run by Mr. Crickson who fosters another three young people; Fast Forward, the
quarterback for the
Lee High School Generals football team, Swap-Out, who is mentally ill, and Tommy, who bonds with Demon over their shared love of drawing. The living conditions are squalid and Crickson forces the foster kids to assist with farm work, including
tobacco harvesting. Highly popular Fast Forward holds influence over the other foster children, introducing them to drugs. Demon's mom overdoses for the second time on
oxyContin, and dies. Demon returns for the funeral and then spends Christmas with the Peggots, joining them on another trip to Knoxville. June has decided to move back to Lee County due to her colleagues demeaning her for being a '
redneck'. Demon leaves Creaky Farms and is sent to stay with another neglectful foster family, the McCobb's. He is able to save some money by working for Mr. Ghali, a
Dalit immigrant from India, who runs a garbage disposal operation (and implied meth lab) out of a gas station. Neglected and hungry, Demon decides to hitchhike to Murder Valley, Tennessee, to find his paternal grandmother. He finds his grandmother Betsy Woodall, a hardy old woman who lives with her disabled brother Dick. Betsy contacts Coach Winfield, the coach of the Lee High Generals, who takes Demon in. Demon moves to Coach's mansion where he meets his daughter Agnes (nicknamed Angus after a misunderstanding) and a young man named U-Haul who assists Coach. Coach struggles with
alcoholism, but recognizes Demon's potential as a football player. He starts training him as a
tight end and he eventually becomes a star player for the Generals. Demon and Maggot drift apart with Maggot taking on a
Goth lifestyle. Demon connects with his English teacher Lewis Armstrong. Mr. Armstrong, who is Black, emphasizes the working class population in Virginia who fought on the
Union side in the
American Civil War. His wife, Annie, also a teacher, tries to nurture Demon's artistic abilities when he is identified as gifted. Demon takes a job at a farm supply store where he meets and falls in love with Dori, the purple-haired daughter of the store's owner. Dori's mother is dead and she has dropped out of school to take care of her ailing father. At a football game, Demon gets tackled and badly injures his knee. The team doctor puts him on oxyContin and Demon quickly gets addicted despite warnings from June. After a school dance, Dori gives Demon
fentanyl that she stole from her father. June throws a
Fourth of July party at her house. Demon discovers that Hammer Kelly, a Peggot cousin through marriage, has started dating Emmy. Demon introduces Emmy to Fast Forward at the party and they later form a relationship, devastating Kelly. Demon receives a warning from Fast Forward's ex foster sister Rose Dartnell about his violent tendencies, even though she has a strong attachment towards him. Demon tries to see the ocean by traveling east with Fast Forward, Emmy and Maggot. This trip is cancelled when Fast Forward reaches
Richmond and turns around after doing business with drug dealers there. Dori's father dies and she falls apart. Demon drops out of school and moves in with Dori. They both become increasingly dependent on pain killers. During this time, Emmy also gets heavily involved in drugs and runs away with Fast Forward. After months of searching, June finds Emmy and rescues her from an
Atlanta drug den with the assistance of Demon and her brother. June sends Emmy to an expensive rehab facility. Meanwhile Angus has discovered that U-Haul has been framing Coach for embezzlement. He confronts her while Coach is passed out drunk, threatening to expose everything if she doesn't have sex with him. Demon arrives and together they chase him away. Coach ends up coming clean on his drinking problem to the school. Demon takes on and loses several
minimum wage jobs but also reconnects with Tommy. Hanging out at the newspaper Tommy works for, Demon begins anonymously publishing a popular comic strip. Dori reveals that she is pregnant, and Demon tries to convince her to get sober for the baby. However, Demon comes home to find that Dori has miscarried, devastating them both. Dori's drug habit gets worse, culminating in a fatal overdose. Demon moves in with Maggot, and Rose invites Demon and Maggot to visit Fast Forward. On the way, they pass Hammer Kelly, who is fixing a flat tire. Heartbroken over Emmy, he has started doing drugs. He joins them as they head to a waterfall at the Devil's Bathtub. Hammer Kelly has brought a rifle, and berates Fast Forward for how he treated Emmy. Fast Forward, who is preparing for a reckless dive into the waterfall, fatally falls when his friend notices the rifle and startles him. Hammer Kelly tries to save Fast Forward but drowns in the process. June sponsors a grief stricken Demon to stay at a rehab center in Knoxville. Here, Demon resumes drawing and decides to make a graphic novel about the history of the Appalachian people. Maggot has gone to juvenile prison for supplying Hammer with drugs the night he died, and Tommy has moved to Pennsylvania to marry a girlfriend he met online. Demon stays in touch with Angus, now at college in Nashville, and develops feelings for her. After three and a half years, Annie tries to visit him to discuss an upcoming book deal. Demon knows that she is expecting a baby and drives to Lee County to meet her instead. After seeing that Lewis has taken Annie to the hospital to give birth, Demon visits Betsy, Dick and June. During a retirement party for Coach, Demon fears the traumatic memories that returning to Lee County would resurface, but remains after the party to meet Coach and Angus. Angus is preparing to sell Coach's old house, and Angus and Demon understand their feelings for each other. Together, they drive to the ocean. == Characters ==