Leonard(Johnny Galecki 饰)和Sheldon（Jim Parsons 饰）是一对合起来智商超过360的疯狂科学家宅男。他们的科学家朋友还有风流的Wolowitz（Simon Helberg 饰）和从来不和女人说话的印度人。最近，科学家宅男的对门搬来一个美女剧作家兼餐厅招待，Penny（Kaley Cuoco 饰）。宅男开始蠢蠢欲动了，于是诸多啼笑皆非的故事在几个朋友间“爆炸”开来。

Leonard和Sheldon是一对室友，他们共同的好友Howard 和Rajesh跟他们一样，是任职于同一所大学的天才科学家，他们都是不折不扣的Geek——智商超群，情商奇低；热爱电玩与漫画，不善与人交流，更不用说与异性相处；他们凡事用科学解决，因此引发不少笑话。美女邻居Penny的出现，让他们的生活产生了全新的变化。宅男科学家与美女侍应生的碰撞，有了奇妙的化学反应。
暗恋Penny已久的Leonard终于获得了与她约会的机会，Howard、Raj和Sheldon帮助他科学分析约会成绩。在科学家们的精确计算下，Leonard能否抱得美人归？

Tributary Empires in Global History is one of a very select few to pioneer comparisons between the great historical empires of agrarian societies, such as the Roman, Mughal and Ottoman empires, and others. As such, it is an exercise in global and comparative history over time. It examines and interrogates our basic historiographical, theoretical and comparative models and conceptions about how large pre-colonial empires expanded, operated and declined. In 14 chapters, all of them explicitly comparative, a group of leading historians, sociologists and anthropologists illuminate tributary empires from diverse perspectives ranging from the character of the state and fiscal organisation, to imperial households, royal rituals, provincial societies as well as shared historiographical traditions and tropes. In doing so, the essays draw attention to the importance of these earlier forms form of imperialism to broaden our perspective on modern concerns about empire and the legacy of colonialism.