The Man Who Knew Infinity is the true story of a friendship that forever changed mathematics. In 1913, Srinivasa Ramanujan (Dev Patel), a self-taught Indian mathematics genius, traveled to Trinity College, Cambridge, where over the course of five years, he forged a bond with his mentor, the brilliant and eccentric professor, G.H. Hardy (Jeremy Irons), while fighting against prejudice to reveal his mathematic genius to the world.