Ben Campbell is a bright, young student at M.I.T. in Boston who is determined to achieve. Ben, who wants to become a doctor and wants a scholarship to transfer to Harvard School of Medicine, discovers that he cannot pay the $300,000 for the four to five years of college because he comes from a poor, working-class family.
Ben is introduced to a tiny but hidden group of five by his unconventional math professor Micky Rosa one evening. Professor Rosa is teaching students Jill, Choi, Kianna, and Fisher the ability of card counting in blackjack.
Ben joins his new buddies on covert weekend visits to Las Vegas, where they have Ben make hundreds of thousands of dollars in winning blackjack at casino after casino, using their talents of code speak and hand signals.
Ben merely wants to make enough money to cover his Harvard tuition and then go. But, as fellow card counter Jill Taylor predicts, greed and arrogance at winning corrupt Ben, allowing his emotions to get in the way.
This puts Professor Rosa, as well as the group, on the radar of a brutal casino security enforcer named Cole Williams, who holds a personal grudge against Rosa, threatening to undo everything the students have learned and earned.