During The King of Iron Fist Tournament 5, Marshall Law's illegal employment in Japan was detected, causing him to be deported resulting in his deportation back to the United States. The deadline to pay for his son's accident was approaching, but Law had no means to deliver the cash and was completely out of ideas.
With money on his mind, Law received a timely invitation from his friend, Paul Phoenix, to team up in the next tournament. Although receiving the top prize money would be difficult to accomplish alone, the likelihood of doing so would be much higher if he was to team up with another fighter. After accepting Paul's invitation, Law realized that three people would be even better than two, so he set his eyes on the world-famous boxer, Steve Fox.