This video game was not built for more than one person. When these kids tried to enter the video game through a magic VR system, the main character spot (0x30) was already taken, and so instead they found themselves turned into the dungeon minibosses (0x31 through 0x37). Each one is trapped in their respective dungeon, all alone.

Y.Y., the man who programmed the game 25 years ago, realized that the key to turning them human again was to copy the main character data into an open spot in the SRAM buffer and trick the game into loading from there instead. Now he and Sabina have to track down all the trapped kids, rescue them, and help them escape the game world.