Yuki Matsuri is a 17-year-old boy who dreams of becoming his ideal person: a girl with long silver hair, blue eyes, and a petite frame. One night, after making a wish, Yuki wakes up to find himself transformed into his dream girl. Though he's shocked at first, he soon embraces his new form and begins to explore his identity as Yuri. But as Yuri navigates her new life, she discovers that her transformation has not only changed her appearance, but also granted her vampiric abilities. With the help of her supportive family, Yuri must learn to control her powers and face the challenges that come with being a transformed vampire girl.