There was a coup in the Soviet Union and the rebels took control of the nuclear bomb base. The United States was immediately on full alert. Naval officer Hunter, who was celebrating his daughter's birthday, and his friend Wars were ordered to rush to the command post. They were ordered to lead a nuclear submarine with another officer, Lin Xi, to prepare to defend against a nuclear attack by the Soviet Union.
Lin Xi is a fanatical militant. He will conduct missile exercises shortly after sailing. Hunter stopped his reckless behavior. For this reason, Lin Xi was very dissatisfied. Conflict broke out between the two. After more than ten days of submerging, the morale of the soldiers generally declined, and fights occurred from time to time. During the voyage, they encountered a hostile submarine. When Hunter and others were accepting the emergency order, the communication equipment was also damaged, and the order was interrupted before the order was accepted. Hunter advocated caution, but Linxi insisted on launching missiles. With the support of everyone, Hunter removed Lin Xi from his post and suspended the launch of the missile.
Under the agitation of his subordinates, Lin Xi prepared to riot. At this time, the opponent's submarine also continued to attack. Hunter ordered a counterattack while demanding that the communication check instructions be repaired as soon as possible. But Lin Xi broke into the command room and got the launch key, ignoring Hunter's warning to launch the missile. Wentz, who was in control of the password, refused to cooperate with Linxi, but finally surrendered the password under duress. At the moment when Lin Xi was about to press the launch button, Hunter, with the help of his subordinates, rushed to pull out the launch key and stopped the launch. Hunter ordered the submarine to float up to resume communication, and Lin Xi has also led his troops to confront Hunter and others. At the time of the crisis, communication was restored, and the submarine received an order to suspend the launch. Lin Xi gave up the attempt to launch the missile in frustration and handed over the command of the submarine
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