Yuuto, who lives alone in an old house deep in the mountains due to his parent’s hobby, spend two hours every day commuting to high school by bicycle. However, there is a secret that even he himself unaware of. Unbeknownst to Yuuto, his own home had turned into a dungeon several years ago. But Yuuto himself only felt nothing more than that insects frequently appeared and his homegrown vegetables grew well. Because of the recommendation of his friend, Yuuto decided to stream the videos of his daily life. The videos of his obviously abnormal daily life went viral in no time.