未来的日本，机器人已经融入了每一个人的生活，每一个家庭都有一个机器人仆人。这些机器人地位低下，但外表已经与人类无异。高中生陆雄一直是这么看的，把自己家的机器人仆人SAMMY当作下人使唤，直到他来到了一家名叫“夏娃的时间”的酒吧。 “在这里，机器人与人类没有区别”这家“夏 娃的时间”门口的牌子这么写道，这里的确也是如此。机器人与人类没有隔阂的交谈着，没有人是低人一等的工具。陆雄在这里感受到了与以往不同的观点，他甚至对一个机器人女孩产生了好感。但是，他也发现了自己家的SAMMY偷偷跑出来，来到这家酒吧。机器人到底是工具还是朋友？陆雄陷入了迷惘的境界。而这一切之外，似乎还有更大的阴谋。

In the far future when the continuity of the history has been lost, humans live in an ever more deteriorating completely artificial and enclosed world. The sea and the sky have disappeared, and the only window to "living" scenery exists in the records from the past, excavated in the relic.The Bureau of Record Excavation is an organization responsible for this task. Ura works for the 92nd office of the bureau. He is absorbed by the restoration of various records and fascinated by world of the past. Riko keeps a little distance to watch him, but averts her eyes from the records, believing that sometimes people just want things to stay the same.Everyone in this world knows that to know the past means to know the misery of this world, the present reality. But one day, Ura restores a strange video...