In this installment of the El Hazard series, the revered Great Priestess of Water, Miz, prepares to leave her duties to marry her beloved Fujisawa. As she steps down, a young and ambitious priest named Qawoor Towles arrives to take her place at Floristica. However, Jinnai sees an opportunity to infiltrate the laboratory of Makoto, a brilliant but reclusive scientist, during Qawoor's initiation ceremony. Unfortunately, Jinnai's plan goes awry as he accidentally activates a mysterious device that sends the entire group hurtling through the dimensions into a desolate, industrial city. This uncharted world is guarded by a colossal castle, marking the beginning of a perilous journey for the travelers.