Takaki Noriko is 33 years old. Due to some case which she had in the past, she has an absolute sense of justice. She does not allow herself to do wrong or commit crimes. After she got pregnant, Takaki Noriko became a housewife. Takaki Noriko meets again her 4 friends from high school: Nishiyama Yumiko, Riho Williams, Ishimori Reika and Imamura Kazuki. Her four friends all lead their own separate lives. Due to meeting Takaki Noriko again, their lives begin to change.