Earth in 2201, the most brilliant inventors of the Z organization created a machine that could travel through space and time. Our main character, Yasuo, is on a mission to join this journey. However, a big explosion happened, and Yasuo, lost in time, arrived in a strange place where dangerous monsters were always waiting. Survival was the ultimate goal. In the journey to find his way back home, in addition to surviving before the hordes of aggressive monsters, a horrifying truth is gradually bei