It's a great hollywood movie depicting the hardships and racism inflicted upon the great Indian mathematician Mr Srinivasan Ramanujan when he left his motherland for Britain during the British rule in India. In spite of lacking formal education in Maths, he rightfully got a seat in the Royal Society of London for his groundbreaking contributions which is so beautifully shown in this movie...
I recommend all to watch this movie and you would have a great time!