[short summary] Andrew Walker, a young engineer at Columbia University, is working on a revolutionary rocket propulsion prototype under the guidance of his mentor, Professor Levitt Oswalt. However, the shadowy organization Hydra, led by the ruthless Viper, seeks to steal the prototype for their own nefarious purposes. Andrew is caught in a web of danger as he tries to protect the prototype and those he cares about, including his mentor and his love interest, Erica Newman. When Hydra agents attack, Andrew and Oswalt attempt to escape with the prototype, but they are confronted by the Viper, who threatens their lives. In a desperate bid to protect his mentor and the prototype, Andrew negotiates with the agents, but the situation escalates when Erica arrives, adding a new layer of complexity to the standoff. As tensions rise, Andrew is forced to make difficult decisions to safeguard his loved ones. The Viper's relentless pursuit leads to a series of confrontations, culminating in a dramatic showdown at the hospital where Oswalt is recovering from injuries inflicted by Hydra. Andrew, with the support of Erica and their allies, prepares to face the Viper and put an end to the cycle of vengeance and grief that has haunted him. Throughout the ordeal, Andrew grapples with his identity as Rocket-Man and the responsibilities that come with it. Ultimately, he realizes that true heroism lies in standing up for what is right and protecting those he loves, not just in wearing a suit or fighting villains. The story concludes with Andrew ready to confront the Viper and defend his newfound family.