The first Japanese heel wrestler appeared in Japanese professional wrestling. He was "Tiger Mask" who had been called "yellow devil" with fears in the United States. He was the first masked wrestler, and he fought cruelly breaking the rules. But he had a secret that he couldn't talk to anyone. Date Naoto, who was Tiger Mask, had been raised in a orphans' home, then he had been trained by the heel wrestler training organization, "Cave of Tigers". The wrestlers who had trained at "Cave of Tigers" had to pay a lot of money. However, he knew that the orphan's house was suffering from a lot of debts, and he took over the debts in order to help Ruriko who was his childhood friend and the manager of the orphans' house without revealing that he was Tiger mask. Thefore, he couldn't pay money to "Cave of Tigers". Furthermore, he quitted his villain acts for the children who yearned for him. Because of the betrayal, "Cave of Tigers" began to send heel wrestlers one after another to destroy his carrier as a wrestler.
(taken from Animenfo)
(Trama tratta da http://www.spaziofilm.it/content/archivio/articolo_dvd.asp?id=4154&sito=dvd)
Orfano dei genitori, il piccolo Naoto Date viene cresciuto tra le ingiustizie e le brutalità di Tana delle Tigri, una potente organizzazione che gli insegna l'arte della lotta, allenando i ragazzi a diventare lottatori violenti e scorretti. Ma Naoto si ribella e decide di scappare via per costruirsi una vita "normale" ed allo stesso tempo allietare le sofferenze altrui. Ben presto, diventa il lottatore mascherato più forte del panorama internazionale con il nome di "Uomo Tigre" (dalla maschera che indossa durante i combattimenti per nascondere la sua vera identità), sfidando le scorrettezze degli avversari con l'onestà, ma diventa anche un uomo migliore, aiutando con i guadagni delle vittorie l'orfanotrofio degli amici di sempre Ruriko e Wakatsuki.