Officer Ren Hopper is an enforcement ranger with the National Park Service, tasked with duties both mundane and thrilling: breaking up fights at campgrounds, saving clueless tourists from moose attacks, and attempting to broker an uneasy peace between the wealthy vacationers who tromp through the park with cameras, and the residents of hardscrabble Cooke City who want to carve out a meaningful living. When Ren, hiking through the backcountry on his day off, encounters a tall man with a dog and a gun chasing a small black bear up a hill, his hackles are raised. But what begins as an investigation into the background of a local poacher soon opens into something far murkier: a shattered windshield, a series of red ribbons tied to traps, the discovery of a frightening conspiracy, and a story of heroism gone awry.

Kingfisher Lodge is known by locals as "Billionaire's Mile" and is locked behind a heavy gate. Sandwiched between barbed wire and a meadow with a sign that reads "Don't Get Shot!" the resort boasts boutique fishing at its finest. Safe from viruses that have plagued America for years, Kingfisher offers a respite for wealthy clients. Now it also promises a second chance for Jack, a return to normalcy after a young life filled with loss. When he is assigned to guide a well-known singer, his only job is to rig her line, carry her gear, and steer her to the best trout he can find. But then a human scream pierces the night, and Jack soon realizes that this idyllic fishing lodge may be merely a cover for a far more sinister operation.

Wynn and Jack have been best friends since college orientation, bonded by their shared love of mountains, books and fishing. When they decide to canoe the Maskwa River in northern Canada, they anticipate long days of leisurely paddling and picking blueberries, and nights of stargazing and reading paperback Westerns. But a wildfire making its way across the forest adds unexpected urgency to the journey. One night, with the fire advancing, they hear a man and woman arguing on the fog-shrouded riverbank; the next day, a man appears on the river, paddling alone. Is this the same man they heard? And if he is, where is the woman?

Celine has made a career out of tracking down missing persons nobody else can find. But when a young woman named Gabriela employs her expertise, what was meant to be Celine's last case becomes a scavenger hunt through her own memories, the secrets there and the surprising redemptions. Gabriela's father was a National Geographic photographer who went missing in Wyoming 20 years ago, and while he was assumed to have been mauled by a grizzly, his body was never found. Celine and her partner set out to Yellowstone National Park to follow a trail gone cold but soon realize that somebody desperately wants to keep this case closed.

In the wake of tragedy, Jim Stegner, a well-known expressionist painter, abandoned the art scene of Santa Fe to start fresh in the valleys of rural Colorado. Now he spends his days painting and fly-fishing, trying to find a way to live with the dark impulses that sometimes overtake him. But one afternoon, Jim comes across a man beating a small horse, and a brutal encounter rips his quiet life wide open.