Mira Toose is a celebrated political figurehead known as the Hopebearer who discovers a dangerous secret regarding the illegal trade and mistreatment of her land's dragons. After being betrayed and sentenced to the Pit, a high-security prison, she must overcome her anxiety and find a way to survive the harsh conditions. While incarcerated, she works with fellow inmates to uncover a conspiracy that threatens the safety and future of the Fallen Isles.