In Shanghai 13 Poker, you play as the French consul, who is killed by a group of criminals. The murder conspiracy is discovered when you are sent back to Shanghai by time machine. The only way to clear yourself is to compete in the Shanghai 13 Poker competition.

To compete in the competition, you need to be in the top three ranking scorers. You will be given a number of challenges, which you need to pass to become number one in the ranking. In the competition, you will be given a hand of cards to play with. You need to be the best in Chinese poker in order to win the competition.