Japanese-American law student Suki Iota falls in love with his guardian's niece Rei Oaki, who has just arrived from Japan to cultivate her singing voice. After Suki goes East to law school, Rei, thinking Suki wants an American girl, gets Tom Kirby, the son of the Chinatown boss, to teach her American ways of dress and behavior. On his return, Suki is displeased with Rei's change and believes her to be Tom's girl when he sees them celebrating the Chinese New Year. Suki is appointed assistant district attorney and, with the whole city watching because of anonymous death threats sent to him, he steadfastly prosecutes a murder case until Tom confesses to him. To protect Rei, Suki removes himself from the case. Labeled a coward and a traitor to justice, Suki remains silent until Tom publicly confesses. Now regarded as a hero, Suki defends Tom. Rei confesses she never loved Tom, and her romance with Suki begins anew.