After a busy day at work, Tokine manages to catch the last train at midnight back home, but while in the train gets transported back into Quizzun, along with the other commuters on the train. She notices that Hacchin was indeed telling the truth with most humans being unable to use more than 10% of their capabilities, and she once more sets to solving a new and harder riddle, this time with the commuters' innocent lives on the line.