Dark serpent

"When the ancestry of Xuan Wu's fianc℗♭́Ưe, Emma, is revealed, it threatens the harmony of the whole Celestial realm. The demons are gathering, powerful alliances are being made and stone Shen are under threat. However, Xuan Wu is distracted--he must save Emma from the Demon King and give her the elixir of immortality, but at what cost?"--Page 4 of cover.