21 (2008)

Ben, a brilliant M.I.T. student, aspires to a scholarship at Harvard despite his financial challenges due to his humble background. His life takes a turn when he joins a secret group led by math professor Micky Rosa, becoming an expert at counting cards in blackjack. Trips to Las Vegas promise riches, but greed changes their goals when a vindictive casino thug, Cole Williams, threatens them, putting profits and knowledge at risk....