Erica Skyberg is 35 years old, recently divorced --- and trans. Not that she's told anyone yet. Mitchell, South Dakota, isn't exactly bursting with other trans women. Instead, she keeps to herself, teaching by day and directing community theater by night. That is, until Abigail Hawkes enters her orbit. Abigail is 17, Mitchell High’s resident political dissident and Only Trans Girl. It’s a role she plays faultlessly, albeit a little reluctantly. She's also annoyed by the idea of spending her senior year secretly guiding her English teacher through her transition. But Abigail remembers the uncertainty --- and loneliness --- that comes with it. Besides, Erica isn’t the only one struggling to shed the weight of others’ expectations. As their unlikely friendship evolves, it comes under the scrutiny of their community.