Jin hee just a normal girl who spend time her life with her best friend and carry out her responsibilities as a student. One day, a new student from China suddenly moved to the school.Since then, something unsual always happen around her. However, something unexpected happened more and more rapidly, after the announcement about an Unknown system. Where the elect are exiled from their world to go to the another world. Their mission is, they need to survive until the end. If they win, the unknown system will disappear forever. But if they lose. That's a "End game" for humanity.