Annie Jacobson has grown up in New York City with her twin brother and adoptive father, never knowing much about her estranged grandfather. When she unexpectedly inherits his secluded Canadian island, she travels there to find answers — and discovers Ramona, a young woman whose existence upends everything Annie thought she knew about her family. Amid untold secrets and complicated grief, Annie also finds new friendships, first loves, and a sense of belonging she never expected. The series weaves together themes of sisterhood, nature vs. nurture, and found family across its eight-episode first season.