Jane Rydert's life takes a sudden and unexpected turn when her older sister, Cassidy, shows up at her door after sixteen years of confinement in a psychiatric hospital. The reunion is fraught with tension and misunderstandings as the two sisters struggle to reconnect after all these years apart. As Jane struggles to understand her sister's behavior and feelings, she must also navigate the complexities of their relationship and the challenges that come with being siblings again. With each passing day, Jane finds herself increasingly drawn into Cassidy's world and struggling to keep her own sense of identity intact.