Sailor-suited Haru Sakurano is captured by a man, and when intelligence agent Madoka Karasuma arrives to rescue her, she too is discovered and captured. Helpless and unable to call for help, the two are completely at the mercy of their captor. Haru is taken away to another location, leaving Madoka behind with a time bomb planted beside her. Tension and anxiety escalate as the fate of both women hangs in the balance.