A string of bad luck has pushed Makoto Edamura into a life of crime, surviving by pickpocketing and scamming people. But after conning a seemingly gullible tourist, Makoto realizes he was the one who got tricked—and to make things worse, the police are now hunting him. While fleeing, he bumps into the tourist again, who reveals himself to be a fellow con artist named Laurent Thierry, and ends up trailing him to Los Angeles. To defend his self-proclaimed title of "Japan's Greatest Swindler," Makoto challenges his rival to see who is the better scammer. Accepting the challenge, Laurent drops them off outside a massive mansion and claims their target will be the biggest mafia boss on the West Coast. As Makoto gets deeper into the world of cunning Laurent, his colorful associates, and international high-stakes fraud, he soon realizes he got more than he bargained for as his self-declared skills are constantly put to the test.