Jackson is an 11-year-old boy who has spent his entire life living in the remote Alaskan wilderness with his parents. Homeschooled and highly independent, he relies on a deeply ingrained survivalist mindset to handle challenges. The sudden destruction of his family's cabin forces him to relocate to town. In this new environment, he struggles to adapt to attending a formal school and forming connections with peers, often preferring solitude over the unfamiliar social dynamics of the classroom.

Deb is Jackson's caring and resourceful mother. She shares her extensive knowledge of off-grid living with her son as his primary homeschool instructor. She maintains a positive attitude during crises, relying on the family motto to take action rather than giving in to panic. Her resilience grounds the family when their home is unexpectedly destroyed by a winter bear and a subsequent fire.

Bruce is Jackson's father, an experienced outdoorsman who dreamed of living in the Alaskan bush since his college days. Having learned wilderness skills through trial and error, he passes his knowledge of hunting and fishing to his son. He encourages Jackson to keep an open mind about town life and attending a traditional school, recognizing the importance of adaptability.

Uncle Solly is a kind-hearted carpenter living in the seaside town of Valdez. Though not a biological relative, he is the Barretts' closest friend and former neighbor in the bush. He originally taught Jackson's parents essential survival skills during their difficult first year in the wilderness. When the Barretts lose their home, he immediately offers them shelter and employment.

Miss Lawrence is Jackson's young, energetic fifth-grade teacher. As an Indigenous Alaskan of the Unangax people, she shares local geography and cultural history with her students. She goes out of her way to make Jackson feel comfortable during his difficult transition to town life. She notices his anxiety and offers gentle, though initially unwanted, support.

Chris is one of Jackson's new classmates at the elementary school in Valdez. He is inquisitive about Jackson's unconventional off-grid lifestyle and tries to include the new student in social activities. He demonstrates courage when severe geological events strike the town.

Leonor is a friendly fifth-grader in Valdez who is fascinated by Jackson's experiences in the Alaskan bush. She and her friends form a supportive peer group that Jackson observes closely. She is quick to express verbal concern for the safety of others.

Mary is a student in Miss Lawrence's fifth-grade class. She is welcoming to Jackson, openly praising his stories about encountering wolves and bears in the wild. She is part of the local social circle eagerly awaiting the arrival of a supply ship at the Valdez docks.

Nora is a local Valdez child in Jackson's fifth-grade class. Like her friends, she is eager to make the new student feel at home. She asks Jackson questions about his remote upbringing and demonstrates genuine empathy when unpredictable challenges arise in the town.

The grizzly is a starving "winter bear" that emerges from hibernation early in search of food. It invades the Barrett family's cabin to eat their stored supplies, inadvertently knocking over hot embers and starting a devastating fire. Its destructive actions force the family to abandon the wilderness for Valdez.

The wolf pack is a group of wild animals Jackson previously observed in the Alaskan bush. When a grizzly bear threatened one of the wolves, the entire pack banded together to defend their member and chase the larger predator away. Their coordinated defense provides Jackson with a concrete example of how community strength outweighs individual power.