After getting offered her dream job, Margaret moved to Tsukuba Science City in Japan to work on the time machine project. An avid lover of science, she placed all her time and faith in her work and the theories surrounding the time machine.Her whole world is turned upside down however when she is accidentally sent back in time to ancient Japan. There she meets a Gundan-Sei and a mysterious man who seems to find her wherever she goes.Mistaken for a celestial maiden, the time machine is hidden from her, but all Margaret wants to do is go home. Determined to find a way back, she needs to find the machine, get it fixed, and avoid the Gundan-Sei who has other plans.