Naoto Date, also known as Tiger Mask, betrayed the international villainous wrestler group "Tiger's Den" to which he belongs in order to protect the orphanage "Children's House", which can be said to be his parents' home. Tora no Ana, who is trying to punish him with death, sends the beastman gorillaman as the next assassin. Faced with a formidable foe who boasts superhuman strength, he once thought about using a foul technique to get through.