A love story between Snow Women sisters and a male high school student.

Saki Fuyuki (Tina Tamashiro) is a female high school student, but she comes from a family that has the blood of Snow Woman. To revive her family, she is expected to have a baby with Ryunosuke Shiba (Junki Tozuka). He is the prince of the most powerful family in the human world, but Saki is attracted to Rei Ando (Ryusei Yokohama). Rei Ando possesses a warm personality that Ryunosuke Shiba lacks. His family has served for Ryunosuke Shiba's powerful family for generations. Rei Ando is also human unlike Saki Fuyuki.

Meanwhile, Koyuki (Yuna Taira) is Saki Fuyuki’s younger sister. She is a middle school student, but enters the high school where Saki attends. Koyuki struggles to protect her older sister.