Noriyasu appears to be a typical third-grader, but his life becomes chaotic when his mother discovers his diary. Trying to impress her, he starts writing unbelievable stories about a giant snake in the bathroom, eating pencils, and a rain of pigs. Surprisingly, his fictional tales begin to happen in real life, and everyone accepts them as truth. His attempts at becoming a journalist only escalate the chaos, as his fabricated stories become a sensation, culminating in a bizarre holiday involving pigs.