A small company that operates a bustling picture theatre decides to expand by opening a pavilion at a major exposition, then journeys west and becomes embroiled in a sequence of episodic adventures. Their plans are interrupted by accidents, strange encounters and a rescued youngster, then by discoveries at the fair involving unusual films, a suspected theft, an asylum visit, and tense investigations among concession operators and performers. Through resourcefulness, inquiry, and collaboration the group traces the theft, recovers their property, and ultimately secures a successful exhibition that validates their gamble.