Having been accepted to the high school of her dreams, Stella Women's Academy, Yamato Yura arrives at her dorm with hope swelling in her heart. Unfortunately, she can't meet her third-year roommate Kashima Sonora yet since she's away visiting home, but Yura happily flops onto her bed fantasizing about her new dorm life. Then she finds something under her pillow that one would never expect to find at a school for rich girls, shattering her rose-colored fantasies. It's... a Desert Eagle! What is a gun doing in a place like this?!