Four best friends make a promise that they will enter the same high school. Then Tasya has a scary dream of being chased by a female ghost wearing a high school uniform. When cleaning the books in the library, Tasya and her friends, are scolded by a female student. Tasya recognises the student as the ghost in her dream. Since then, the six companions are often disturbed by the ghost. Tasya finally discovers the source of the problem in the school yearbook.