Tony Stark, the CEO of a major weapons manufacturer, physicist, engineer, and brilliant inventor, is injured by shrapnel from one of his own weapons. While held captive by terrorists, he creates the Iron Man Suit and escapes. From that day forward, he vows not to waste his second chance at life and to improve the world. For this purpose, he travels to Japan. In Lab 23 in Japan, significant progress has been made in developing and constructing a unique power station that does not rely on fossil fuels, the Arc Station. Stark intends to join this project, and for that reason, he is prepared to announce his retirement as Iron Man. Simultaneously, he will also reveal the Mass-produced Iron Men, to whom he will transfer his duties. However, during the ceremonies, Stark is suddenly attacked by combat mecha belonging to an organization known as Zodiac.