拉马努金（戴夫·帕特尔 Dev Patel 饰）出生在印度一个非常贫困的家庭之中，从很小的时候起，他就展现出了异于常人的数学天赋，可是因为家境贫寒，家人无法给拉马努金提供一个良好的教育环境。1904年，拉马努金凭借着自己的努力进入了贡伯戈纳姆大学就读，却因为严重偏科而没有毕业，之后的日子里，拉马努金开始自学数学。 　　1912年，拉马努金所撰写的论文《伯努尼数的一些性质》发表了，这篇文章在数学界激起了一些水花，也给拉马努金带来了些许的名声。之后，在好友的帮助下，拉马努金给著名数学家哈代（杰瑞米·艾恩斯 Jeremy Irons 饰）写了自荐信，哈代非常重视这位前途无量的年轻人，引荐他进入了剑桥大学深造。In the 1910s, Srinivasa Ramanujan is a man of boundless intelligence that even the abject poverty of his home in Madras, India, cannot crush. Eventually, his stellar intelligence in mathematics and his boundless confidence in both attract the attention of the noted British mathematics professor, G.H. Hardy, who invites him to further develop his computations at Trinity College at Cambridge. Forced to leave his young wife, Janaki, behind, Ramanujan finds himself in a land where both his largely intuitive mathematical theories and his cultural values run headlong into both the stringent academic requirements of his school and mentor and the prejudiced realities of a Britain heading into World War One. Facing this with a family back home determined to keep him from his wife and his own declining health, Ramanujan joins with Hardy in a mutual struggle that would define Ramanujan as one of India's greatest modern scholars who broke more than one barrier in his worlds.