After three years of precarious peace between the United Federation of Planets and the Klingon Empire, an act of wholesale destruction at Beta XIIA fans a spark of hatred that threatens to erupt into an all out full scale interplanetary war. The USS Enterprise becomes a bloody battleground as Captain Kirk and his crew deal with Kang, the Klingon, in an epic struggle fro control of the ship. And something else rides the Enterprise - something evil, impelling all on board toward an eternal night of hatred, carnage and anguish - a night that can only end with the dawning of the Day of the Dove. Complete episode told with 300 colour photographs.