Humanity is constantly advancing its technology. Arc reactor technology is a vital part of Iron Man's story because it not only keeps Tony Stark alive but also powers his armor. “The most similar device that has been made is the ITER fusion reactor which smashes isotopes together to make atoms which can then be used to create energy” (Quora). The energy produced by the reactor is then used to power Mr. Stark's greatest weapon, the Iron Man suit. The Iron Man suit is the tool Tony Stark uses to defeat his enemies throughout the series. In Tony's journey, he must endure different stages including the call, the response, the guide, the threshold, the trials, the battle between brothers, the rescue and finally the master of two worlds. Tony's call to adventure occurs when he finds himself in a military convoy that is ambushed by mercenaries using his own weapons. He leaves the Hum V or what he calls the "fun V" even when his military guard tells him to stay (Iron Man Script). As he walks away from the convoy, a missile from his own company lands and explodes near him. The explosion causes shards of metal to get stuck in his body and come closer to his heart. Tony passes out from shock and blood loss. Tony is then saved by a mercenary prisoner named Yinsen, who put an electromagnet in Tony's chest to keep the shrapnel out of his heart. Yinsen removed as much shrapnel as possible from Tony's wounds, but there were still small fragments that were very close to his heart and needed to be contained so they couldn't reach him. Yinsen said to Tony, “We call them the undead. I have seen many injuries like this in my village. We call them the undead because it takes about a week for the barbs to reach the vital organs” (Iron Man Script)....... middle of paper ......). Once the first film nears the end, Tony Stark admits to being an iron man rather than telling the audience that the explosion was the result of a freak accident like the SHEILD Agency had told him. The last time we see the film, the director of SHEILD goes to Tony and tells him that Nick would like to have him in the Avenger Program, which is a later film. The central point of the story is the advancement of technology and how it is used. Tony went from rich and powerful, to prisoner with nothing but knowledge, to superhero, to master of both worlds. Joseph Campbell's Hero's Journey format fits the Iron Man story well because it contains some of the major points. The Iron Man movie contains the key points adapted to the hero's journey format, including the call, the response, the guide, the threshold, the trials, the battle between brothers, the rescue and the master..