Cass has to help the immortal being Atem awaken his son from a deep slumber; Hyde and Elise must find a way to work together but Marie tries to get in the way; Ava and Hark uncover mysteries about his heritage and reveal the true identity of the person behind The Immortal War.

In the sequel to The Cellestial City we uncover more about the pasts or our five protagonists and delve into their compelling family drama.