It's a typical day at the office for James Bond until his supervisor, M., calls him into his office for what turns out to be a rather awkward personal favor. M. regularly attends the same club as Sir Hugo Drax, an amnesic wealthy businessman and beloved national hero, wounded and scarred during World War II. Drax is developing a new weapon, the Moonraker, to protect England from her enemies, and there's going to be a test launch within the week. However, M. believes that Drax is also a card cheat, and he invites Bond to his club to discover how he does it and hopefully put a stop to it. Bond, who admires Drax and all he's accomplished, agrees to help out in order to avoid a devastating scandal that might threaten the Moonraker's upcoming test launch. It doesn't take long for Bond to discover Drax's methods, which he counters with a trick of his own, winning the game and a decent amount of cash to boot - cash Drax strongly advises Bond to spend quickly.
Beyond his professional conduct, there are other strong differences between Bond in the books and the movies. In the novels, there are no smooth quips or one-liners before or after dispatching an enemy, and the reactions to potential collateral damage are very different. The movie version of Bond would go "Ah, you're planning on killing millions of people to line your own pockets. Another vodka martini, please." The literary Bond, however, was never cavalier about that sort of thing, reacting with shock or horror to a villain's plan to slaughter thousands to achieve their end. On the other hand, while the Bond of the novel isn't as much of a horndog, he's certainly just as much of a misogynist sexist, if not more so, and is guilty of other bigotries as well. He arguably qualifies as a villain protagonist for this alone, particularly in Casino Royale.