After enduring many trials that strained their romance, Miaka Yuuki and Taka Sukunami finally wed and are now pregnant—the apex of their steadfast connection. Yet not everyone shares in the couple's joy; Mayo Sakaki, a pupil of Taka, secretly harbors affection for him and cannot stand watching their thriving love. While exploring The Universe of the Four Gods, Mayo discovers that the ancient tome records Miaka and Taka's first encounter as Suzaku"s priestess and Tamahome, the celestial warrior. Desperate to seize power, she slips inside, hoping to claim the role of Suzaku"s new priestess and alter destiny in her favor. Her reckless deeds soon bring ruin; she abandons an unconscious Miaka in the hospital, forcing Taka to pursue her into the Four Gods' realm. He must stop Mayo before her machinations endanger his wife and their unborn child for their future. Time is short, and the stakes rise with every step she takes today.