How would you feel if you could cross the borders between worlds by sleeping for the night? Would you enjoy the experience, or would you try your best so that it would never happen again? Is it a blessing or a curse? This is the story of Xaviel Mobius, an 18-year-old University Student who was transported to another world after his failed experiment. Every time he sleeps, he is transported to a fantasy world of sword and magic. It all started as his way of taking a vacation from reality, but a series of events suddenly raises the stakes to a live-or-die situation.