On Earth in the future, humankind encountered imminent destruction from mysterious large animals known as "Massive." The entire globe joins versus the Huge, and efficiently creates weaponry known as "BEAUTY" (Counter Massive Arms) by incorporating science as well as magic. Beauty exhibits high rates of synchronization with teenaged women, and also the women who utilize CHARM are viewed as heroes called "Lilies." Throughout the globe, "Garden" military colleges are established to train Lilies to deal with the Huge and also to act as bases to protect as well as assist people. Riri Hitotsuyanagi managed to pass the exam to go into the distinguished Garden called Yurigaoka Girls' College. She entered in an effort to locate Yuyu Shirai, a girl who saved her in her past. This is a story about Riri as well as other girls that intend to come to be Lilies at one such Yard.