The movie follows the journey of mahendra singh dhoni, a budding cricketer from Ranchi becoming the most successfull captain of indian cricket team. the movie begins its screen play with the ICC cricket worldcup final india vs srilanka in the wankhede stadium, mumbai where mahendra singh dhoni(sushant singh rajput) is watching the match live on screen. he decides to take the stand, and tells the authorities that he would go for batting if the wicket falls down. dhoni takes up his bat and leads down the stairs amidst the roar of the crowd. the movie then sets to a flashback in ranchi, set on 7 july 1981, the day on which dhoni was born.