A resourceful young apprentice is unexpectedly forced to earn his own living and becomes captivated by photography after meeting an amateur camera enthusiast. As he masters the technical work of taking, developing, and printing pictures, he secures assignments that send him traveling and working along a railway line. The plot unfolds through episodic adventures—escapes, confrontations, rescues, a maritime accident, and the exposure of deceit—that challenge his courage and honesty. Practical instruction in photographic technique and a steady moral resolve drive his growth, leading to new friendships, steady employment, and a final reconciliation with his family.