Life is a never-ending search for fun and good times for the sailors lucky enough to be stationed at the naval base located on the tiny Caribbean island of San Ysidro. Most of the guys' days are spent helping their fearless old leader, retired Navy Lt. Commander Quinton Me Hale, spread free enterprise around the nearby islands with a variety of business endeavors, including his trademark beverages, ice cream and pinup calendars. But the easy life is about to be disrupted by a by-the-book new crewmember, the new base commander (and his beautiful sideckick) and a maniacal invader of a nearby island.