The unicorn ran at full speed through the open field, dodging trees, weaving in and out. Seth's eyes were filled with fear at first, as he buried his head in the unicorn's mane. Then his fear turned to exhilaration as he watched the countryside whir by. Feeling the wind blowing through his hair and on his face, for the first time in his life, Seth felt free. Then in the distance, Seth saw it.

"Whoa, boy!" Seth shouted as fear filled his voice, but the creature paid no ...