“The Card Counter” is a movie about a man with a unique skill, and you can guess that skill. During a spell in the slammer, he learned that he was good at counting cards, meaning the cards used in gambling. He is a low-profile expert at winning. He keeps a low profile due to his criminal record, and because casinos discourage ‘card counter’ players. But when his past catches up to him, he goes all in. He does not count on what happens next.