In September 1998, Frankie O'Neill, a 26-year-old graduate student in the University of Washington's avian biology program, drives to her family's cottage at June Lake, a remote alpine lake in Washington State's Gifford Pinchot National Forest. Her Irish immigrant grandfather, Ray, won the caretaker's cottage in a poker game decades earlier, and Frankie has spent every summer here. The first in her family to pursue a master's degree, she is now unemployed and out of options. Her father, Jack O'Neill, died five months earlier in an accident, and her thesis advisor, Dr. Davis Grant, has blocked her graduation by canceling appointments, ignoring her emails, and firing her from his lab. Frankie comes to the cottage seeking refuge, haunted by grief and a bottle of whiskey hidden in the pump house rafters.
The novel's second storyline follows Anne Ryan, an Irish musician and teacher at Cornish College of the Arts in Seattle. Anne came to the city six years earlier as a visiting artist, a position originally intended for her best friend, Katherine O'Faolain, who stayed in Ireland. Anne met Tim Magnusen Jr. at a college fundraiser, became pregnant, and they married quickly. Their son, Aiden, now five, spoke fluently and early but withdrew into silence 18 months ago, shortly after Katherine was killed when a car crashed into an outdoor market in Northern Ireland. Anne blames herself: Consumed by grief, she became emotionally absent, and Aiden retreated inward. She has not written music since, and she is on leave from Cornish after a dissociative episode onstage at a spring concert.
At the lake, the two women's lives intersect through Aiden. During a thunderstorm, the boy wanders into Frankie's cottage uninvited. He does not speak or make eye contact but clearly hears her. Frankie makes him hot chocolate and reads aloud from her childhood bird guide, and he gradually relaxes. Meanwhile, Frankie rescues a fledgling crow with an injured leg, splints it, and names it Charlie Crow. When Anne and Aiden visit later, Frankie asks Aiden to pass her a can of tuna for the bird, and he complies at once, stunning Anne. Frankie's calm, low voice and lack of demands reach the boy in ways others cannot.
The women's friendship deepens quickly. They share stories about their fathers, grandmothers, and losses. Anne tells Frankie about Katherine's death for the first time; Frankie listens without platitudes. Aiden grows attached to Frankie's world: the bird book, the crow recordings on her tape player, and her headphones, which filter out overwhelming sensory input. After Frankie releases Charlie Crow, the crow family visits daily, and Charlie develops a distinctive ascending call Frankie believes is an "ally call" created specifically for her.
Frankie's academic backstory unfolds in parallel. At a spring symposium, she inadvertently revealed to a visiting scientist that Grant's latest paper had been rejected by
Nature. When she shared her own interest in crow vocalizations, developed while assisting colleague Dr. John Marzluff with a facial recognition study of crows, Grant accused her of pursuing competing research and revoked her lab access. She spent the summer selling books and drinking more than she admitted.
Frankie travels to Hood River for the reading of Jack's will. The cottage is left to Frankie, her brother Patrick O'Neill, and their mother, Judith O'Neill, in equal shares through a limited liability company, with Judith as sole directing member. Unable to sort through Jack's belongings, Frankie takes his buffalo plaid jacket and flees. On the drive back, consumed by grief, she recklessly takes the boat out after dark and nearly capsizes. Back at the cottage, she drinks the entire bottle of whiskey.
Anne receives Aiden's assessment from the University of Washington: a diagnosis of Autism Spectrum Disorder and Childhood Disintegrative Disorder. Tim sees the diagnosis as a tool for accessing support, but his next proposal devastates Anne. Set to become president of Magnusen Media after his father steps down, Tim asks Anne to extend her leave of absence, help with corporate entertaining, and send Aiden to Mt. Holy Oak, a residential facility, saying their family "can't be all about Aiden." Anne is horrified and begins planning to take Aiden home to Ireland.
On a hike, Aiden climbs into Frankie's lap to peer through binoculars at a hummingbird nest, the first time he has sought physical contact outside his family. At the Lightning Tree, a massive hollow cedar struck by lightning when Jack was a boy, Aiden finds a marble among treasures Jack once kept there. That night, Anne's creative voice returns, and she begins writing songs inspired by Morrigan, a mythical Irish figure accompanied by crows. Frankie, meanwhile, learns that Judith plans to sell the cottage. At a confrontational lunch, Judith responds to Frankie's pleas with contempt: "All talk and no follow-through. Just like your father."
The novel's climax arrives with a catastrophic storm. Anne, having decided to leave Tim, took a ride down the lake with Jerry Sewell, the longtime water-taxi driver, to call her mother from town. When the storm hits, Tim discovers Anne is gone and Aiden has vanished. Frankie leads Tim through falling trees to the Lightning Tree, where they find Aiden wearing her headphones, tears streaking his face. In a clear voice, he speaks for the first time in 18 months: "Where is my mama?"
Jerry Sewell's body arrives at the dock; his boat capsized in the storm. A search party finds Anne alive on an old log boom, wearing Jerry's float coat, a buoyant life jacket he strapped on her before the boat overturned. Jerry was not wearing one when they found him.
Patrick and Judith arrive by sheriff's boat, having feared the missing woman was Frankie. Judith embraces her daughter in a rare show of affection. Frankie gives Judith a calendar containing an unopened letter from Jack, in which he reveals he had been three months sober and asks forgiveness. The letter transforms the family: Judith drops her lawsuit over the tavern, does not sell the cottage, and accepts half ownership in the building. Patrick leaves the law firm to run the River City Saloon.
Frankie writes a paper on crow communication drawing on her observations of Charlie Crow's ally call. She contacts Dr. Wood-Smith, a member of her thesis committee, who is furious at what Grant has done and pledges to intervene. The university forces Grant to comply, and Frankie defends her thesis before Christmas. Her paper is accepted by
The Auk, a leading ornithological journal, and she enters the doctoral program at Oregon State University.
Tim declines the Magnusen Media presidency, becoming publisher of the Spokane paper instead. The family moves to Spokane, where Anne takes a position at Gonzaga University and Aiden enrolls in a program for neurodiverse students. He thrives, reading above grade level and making friends. Tim stands up to his mother, and the family travels to Ireland for All Souls' Day, a Catholic feast honoring the dead, to attend a memorial for Katherine.
The novel closes on Good Friday 1999 with three parallel scenes. Frankie prepares to deliver the keynote at the UW Spring Symposium, watching crows on the quad and thinking of her father. Anne sits at a piano in Dublin directing a choir in her new song cycle, the first music she has composed without Katherine. And Aiden stands before his class presenting a story called "Crow Boy" about a boy and a crow who help each other through a storm. Stories are everywhere, he reflects, waiting to be heard.