Watch 21 (2008) : HD Online Ben Campbell is a young, highly intelligent, student at M.I.T. in Boston who strives to succeed. Wanting a scholarship to transfer to Harvard School of Medicine with the desire to become a doctor, Ben learns that he cannot afford the $300,000 for the four to five years of schooling as he comes from a poor, working-class background. But one evening, Ben is introduced by his unorthodox math professor Micky Rosa into a small but secretive club of five. Students Jill, Choi, Kianna, and Fisher, who are being trained by Professor Rosa of the skill of card counting at blackjack.