Human historian Qinghe is ordered to the deep‑sea prison to record exiled black dragon Ao Chen's story over thirty nights. Framed by heaven for genocide, the fierce dragon hides a gentle heart. Trapped together on a coral isle, they bicker and bond. Qinghe uncovers that the dragon clan fought only in self‑defense, and heaven rewrote the truth. When heavenly envoys arrive to seize Ao Chen as the deadline nears, Qinghe stands with him. They gather proof of the millennial injustice, defy celestial oppression, forge a cross‑species bond between human and dragon, and expose the corrupt high‑heaven conspiracy.
