Captain Harris of the Selene faces the question of rescuing 22 people when the airboat sinks into the sea of dust on the Moon. Aided by a long time space flier and the unflagging efforts of the stewardess, Harris works for morale and calm while efforts are made to free those trapped. Mishaps, mechanical obstacles, a shift in Selene's position, the battle against heat, end in deserved safety. Able science-fiction here.