A girl (6th grade), who speaks an extra terrestrial language, can't communicate with her family. They don't understand her language. She might not be an earthling. Her family treat her like a freak just because she uses internet slang. She is under the illusion that she is a real extra terrestrial and with her supernatural power, she could meet "That guy"-Ji eun-sung-who is a hero in the internet novel "That guy was nice" Is she a real extra terrestrial who is on earth by mistake?