Two pairs of Mormon missionaries from America live in a beaten-up apartment in the Dutch city of Haarlem. Their personalities are distinctly different. Appropriately, the most responsible one, Elder Johnson, is the District Leader and oversees their efforts. His companion, the vain Elder Van Pelt, seeks to become the assistant to the mission president (the top post available) as soon as possible, and he receives letters from three girlfriends he left behind. The capable Elder Rogers has become disillusioned and inattentive to his duties ever since a previous missionary companion returned to America, looked up and married Elder Roger's girlfriend. As a result he is simply marking time until he returns home in a few weeks time. The three meet Elder Roger's new companion, Elder Calhoun, in the train station. This new elder is a nerdy but enthusiastic "greenie" that has just arrived from the Missionary Training Center (MTC) in Utah. Unfortunately his training did not give him much fluency...