In the future Japan, robots have been integrated into everyone's life, and every family has a robot servant. These robots have a low status, but their appearance is no different from that of humans. High school student Lu Xiong has always seen it this way, and used his robot servant SAMMY as a servant, until he came to a bar called "Eve's Time". "Here, robots are no different from humans," the sign at the door of "Eve's Time" reads, and it is indeed the case here. Robots and humans talk without barriers, and no one is an inferior tool. Lu Xiong felt a different perspective here, and he even had a good impression of a robot girl. However, he also found that his own SAMMY secretly ran out and came to this bar. Are robots tools or friends? Lu Xiong fell into a state of confusion. And beyond all this, there seems to be a bigger conspiracy.