A magical amethyst, a call from another world.
A forbidden romance, the injured girl and her friends unexpectedly came to an unknown time and space.
The helplessness in another world, facing various difficult tests, the eradication of humanity, and the darkness of the heart are fully exposed. The deep friendship in the real world has become fragmented in the other world...
People who want to love but can't, people who don't love but are entangled with each other, the real world and the other world are intertwined.
Where will she, the owner of Amethyst, go?