Caledonia follows Isla as she moves from her past life in England to a new beginning in southern France. Struggling with the remnants of her past, Isla meets a range of people who help her along her journey of self-discovery. As she confronts her own identity and desires, she finds herself at a crossroads, questioning the life she thought she wanted and embracing the opportunity for change. The novel explores personal growth, relationships, and the challenge of moving forward after loss.