Through by daylight

A young, capable engineer becomes involved with a small railroad company run by local youths, learning mechanical skills, responsibility, and business practices while confronting accidents, rival factions, and interpersonal conflicts. The narrative traces practical episodes—equipment failures, daring repairs, and organized trips—that test character and resourcefulness, and highlights themes of industry, friendship, forgiveness, and moral growth. Scenes alternate technical detail about railroad operation with personal trials and reconciliations, presenting a didactic but lively portrait of youthful ambition, community tensions, and the rewards of honesty and perseverance.