On a very snowy and dark morning, Yuuki Shinozaki, a shy middle schooler, was preparing for her trip to a farewell party of her school...but an unfortunate tragedy happened. When Yuuki was helping her friend, Taiga, to look for his lost handphone, she was taken mysteriously to a lost, dark dimension where a big, mysterious mansion existed. Yuuki didn't know...that this is all just the beginning of her NIGHTMAREs in THE SNOWy and freezing night...