Mister No rescues the famous matador Paco "Jirara" Morales, a fighter for the rights of his Jirara Indian people, from kidnapping. The grateful matador invites Mister No to Pamplona for a vacation, where he will participate in the bullfight at the famous
On the inaccessible Dragon Island, Athos Than organizes a martial arts tournament - an ideal chance for young fighters who would like to prove themselves, and Nathan Never, who is hired by the army to find a deadly bacteriological weapon...
Mister No and three friends sabotage and blow up the Chemical plant. However, what initially seems like a wonderful and brilliant plan turns into a nightmare when the factory's real financiers start taking revenge on everything our pilot holds dear...