Miaka, a junior high school student in Tokyo, has typical problems: fights with her mother, entrance exams, and deciding where to eat with her friends. Then she discovers a mysterious book, the Universe of the Four Gods, in the library, and her life is forever changed when she and her friend Yui are transported into the book! When the girls arrive in this new universe, they are attacked by would-be slavers. Luckily for them, a dashing young man happens to be nearby! Both girls are smitten with him after being rescued from would-be slavers, but all he really wants is money! Tamahome and Yui vanish when Miaka is not looking. Could he have kidnapped her in order to sell her for money? Yui, unbeknownst to Miaka, has been sucked back into the real world. Back in the library, all she can do is read on as her childhood friend sets out for the city to find the mysterious young boy and save her friend. But what awaits Miaka isn't what either of the girls expects - and now Miaka's only way back to her world is to become the Priestess of Suzaku and save their world.