Hiiro is kidnapped by Sharisharu and Nambuuko, who want to control the evil dragon Dagan Zot.  Nambuuko reveals that he was the one who killed Hiiro's parents.  But without his Dragon Form, can he defeat Nambuuko, or is he doomed to be held a hostage for his heart?
With Dagan Zot's heart in my hands, 
his life is mine to command.
حياة داغان زوت تحت إمرتي بامتلاكي لقلبه
Mit Daganzords Herzen habe ich
auch sein Leben in der Hand.
Con el corazón de Daganzoto 
en mis manos, su vida es mía.
Con el corazón de Daganzoto 
es mis manos, su vida es mía.
Maintenant que le cœur de Danguard
est entre mes mains,
Con il cuore di Daganzoto nelle mie mani,
la sua vita è al mio comando.
Com o coração do Daganzoto em minhas
 mãos, eu tenho o controle dele.