1861年，Johnnie Gray（巴斯特·基顿 Buster Keaton 饰）是西部大西洋火车公司的一名员工，深爱着他的火车“将军号”，还有他的未婚妻（Marion Mack 饰）南北战争迸发了，他的未婚妻让他去从军，军方却拒绝了他，认为让他开火车更有价值。他的未婚妻很生气，发誓除非看见他穿军装的样子，不然再也不和他说话。北军正在计划一个阴谋，准备劫走“将军号”，给南军来一次突袭。Johnn...

Steamboat Bill, Jr. is the story of a naive, college-educated dandy who must prove himself to his working-class father, a hot-headed riverboat captain, while courting the daughter of his father's riva...