In this middle-grade novel, Eggers constructs a narrative that examines themes of freedom, identity, and community. Johannes’s journey is emblematic through the realization of his dual nature as a dog and a coyote. This duality highlights Johannes's internal conflict and ensuing acceptance of his true self. The story also emphasizes the importance of community and the interdependence of its members. Johannes's relationships with Bertrand and Helene demonstrate the value of friendships and alliances even when they are strained by jealousy.
The novel tells the story of Johannes, a dog who discovers he is half-coyote. Johannes lives in a park on an island and serves as one of the "Eyes" animals who patrol the park and report to the council of three bison. Johannes and his best friend, a seagull named Bertrand, have their lives disrupted when they meet Helene—a goat from the mainland. As Johannes learns about the world beyond the park, he becomes determined to free the bison from their enclosure. The story concludes with a daring plan to help the bison escape. Eventually, Johannes and Helene embark on a new adventure together.
The novel's setting in a park on an island is a microcosm of a larger world with its social structure and challenges. The park is both a sanctuary and a prison symbolizing the constraints imposed by the outside world and the yearning for freedom within. The bison's enclosure and the isolated nature of the island mirror Johannes's journey toward understanding his limitations. The park's ecosystem, with various animals playing different roles, echoes a complex society where balance is maintained through cooperation. Eggers's writing style is notable for its blend of whimsy and depth, which makes the novel accessible to all ages.