Zelena Walker, wakes up a night all of a sudden from her deep sleep getting to be met with the worst nightmare of her life. What happens when a social butterfly of the school who couldn't shut her mouth even while sleeping ended up in a world where there's no human other than her or that's what she thought in the beginning when she was met with problems. Is it not dangerous to live all alone in the vast planet when there's no one to rescue her if there's an issue? She meet a guy who's in disguise but obvious Zelena believes him. What's going to happen?