故事发生在1970到1976年间。这个时期，我国的政治风云多变，每个人的命运都象一只在疾风暴雨中飘荡的小船，忽沉忽浮，不知驶向何方。就在这个历史背景下，出身不好的知青柯碧舟不顾生活的磨难和重重政治压力，仍然坚定执着，于逆境中进击，为他插队落户的山区人民发掘资源，建立了小水电站。感于他的品格和处境，军干家庭出身的女知青杜见春，对他产生了连恤和同情。但反动的血统论给杜见春的心灵布下了鸿沟，使她在柯碧舟纯洁爱情的追求之前怯了步......（The story takes place between 1970 and 1976. During this period, China's political situation and the fate of each person are like a floating in the violent storm of the boat that suddenly sink and float and do not go where. In this historical background, A poor youth, Ke Bizhou, despite the hardships of life and political pressure, still firm and persist to establish a small hydropower station for the mountain people that he settles down in a production brigade. For his character and position, female educated youth Du Jianchun who is from a office family, gives him affection and sympathy. But the reactionary bloodline theory laid a gap on Du Jianchun's heart and makes her stop before Ke Bizhou's pure love pursuit...）