Tells the story of a college student named Eun Ha, who one day receives an anonymous love letter through a supernatural portal - the white hole. Intrigued by the unfathomable worlds that lay beyond the farthest reaches of the galaxy, Shim Eun Ha (Seola) is an astronomy and space science major with an insatiable curiosity and a well-developed imagination. With a mind always open to the infinite possibilities of the universe, Eun Ha is able to see and imagine things that others can't. Which is why the discovery of a strange spot on the ceiling of her home inspires her to create a rather unique theory.