A Soviet submarine inadvertently runs aground near a small New England town. In an effort to free their vessel undetected, the captain sends a landing party of sailors, led by Lieutenant Rozanov, to find a motorboat that can help dislodge the sub. Their clandestine arrival, however, quickly sparks a series of misunderstandings and comedic situations among the inhabitants. Local residents frantically misinterpret the Soviets’ intentions, triggering fear and paranoia about a potential invasion. With tensions escalating, local writer Walt Whittaker tries to manage the chaos while maintaining a semblance of control.

The situation becomes increasingly complicated as both the townspeople and Soviet sailors struggle to communicate and avoid conflict. Amidst the confusion, several of the characters form unexpected bonds, revealing underlying humanity and common ground despite their cultural divides. As authorities and townspeople gear up for confrontation, mishaps abound, leading to a precarious balance between catastrophe and cooperation. The story unfolds with humor and warmth, ultimately emphasizing themes of misunderstanding, fear, and the universal desire for peace.