Captain America must battle Hydra in order to prevent them from releasing a computer virus on a US Navy fleet. In the process, he loses one of his greatest assets- his shield!

Terrorist forces take over a United States Navy submarine. Naturally they do not last long as Cap and the sailors put a beating on the bad guys. Unfortunately, in the chaos Cap loses his shield to the depths of the ocean in order to save an innocent life. Though he sees it as no choice at all, it still will come to hurt.