Keruki Minori is a lonely otaku with no friends. Everyday he attends Silverdust Academy, attends class, and leaves. Never having anything interesting or fun happen to him along the way. Nothing has happened in the first year of high school. He is returning as a second-year. As he is there, a start-of the-year field trip to a museum for history is about to happen. Once the day comes, he already wants to leave. He is paired up with a partner and has to go explore the museum with her. Her name is Yumi Suzume. Yumi then asks Keruki if he wants to secretly leave the museum and go outside in the city. Will this sudden request lead to something heart-warming? Or a really bad outcome?

There are two worlds, the Earthworld and Stelland. Earthworld is a land where creatures called Humans strive and live neutral lives. Stelland however, is a world filled with other beings called Zodiac-Beings that use magic as their everyday routine. Their magic depends on their preferred element, and their Zodiac. The four elements Fire, Water, Earth, and Air can all be used normally within all the Zodiac-beings but most of these beings like to keep a preferred element that suits their style. However, the Twelve Zodiacs, Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces all are different types of Zodiac Magics that can only be used by the specific Zodiac-Being and their Zodiac. These Zodiac-Beings live in their own respective Zodiac and live in peace and harmony that look up to the Gods of the Zodiacs. But then...the Gods of the Zodiacs turn on their own on their own world, Stelland, and create a future no human nor Zodiac-being could think of...