Tomie Hashimoto is a dreamy teen who writes homo-erotic horror fiction in which she imagines herself as Ann Bathory, a vampire. Introspective and lonely, she is picked on and bullied by her classmates at school, and lives alone with her loving, yet distant widower father, Kazuhiko Hashimoto. One day, while admiring an ornate jewel encrusted cross necklace in an antiquities shop, Tomie meets a strange, beautiful girl with a mole under her left eye. The mysterious stranger says her name is Tomie Kawakami. The girls become best friends (with heavy lesbian undertones) and Tomie H. dedicates the character of Mary from her fanfiction to her new friend, but it soon becomes clear that the two girls meeting each other was not purely accidental. Tomie Kawakami has an agenda, and it involves Tomie's father.