A story about dragons! A mysterious acceptance letter, a journey full of unknowns, the naive but mission-bearing teenager Lu Mingfei, the magical and mysterious Kassel Academy... Behind all the mysteries, the ancient figure of a dragon looms! The story tells of how teenager Lu Mingfei receives an invitation from Kassel Academy, a private university in the suburbs of Chicago, while applying to universities abroad. As Lu Mingfei boards the secret express train to Chicago, the story unfolds...