A seaplane departs for China. On board are a nurse escaping a loveless marriage to do work with refugees, a woman hoping to surprise her estranged son, a wealthy heiress trying to distance herself from labor troubles, an oily politician, a moll and a mobster fleeing the wrath of the gangs they've double-crossed, two rival munitions salesmen out to cash in on the misery of war, and a fresh-faced young steward. Caught in a course-altering storm, a crash-landing destroys the plane, kills the plane's officers, and tosses the surviving passengers into the sea.