Teyvat is a world full of stories. Once upon a time, two individuals came from different backgrounds but were stranded in the same world. Now, they have to work together to be able to return home and meet their loved ones. But as time goes by, problems seem to keep coming and getting in the way. Can they get through this all together? An Outlander from outer space who was separated from her brother, and a Doctor who is full of mysteries from the beginning to the end.