The movie Sachin: A Billion Dreams is based on the life of Sachin Tendulkar, who made his debut in international cricket at the age of 16. The film showcases his struggles, achievements, and the impact he had on the game. From his childhood coach, Ramakant Achrekar, to his mentor, Vijay Merchant, the movie highlights the people who played a significant role in shaping Sachin's career.