Juri, Hanane, Makoto, and Mitsugu are the student council members of a prestigious girls' high school, and are the flowers of the school, admired by all for their beauty and excellence. They are the symbol of the school's purity, like the Madonna Lily, a white lily dedicated to the Virgin Mary. But these girls have another face... No one may be able to stop the four Madonna Lilies from being soiled by their own stagnation anymore.