 Members of the U.S. Secret Service, who have been alerted, are assigned to prevent the signing of this "Latin compact" and bring to justice those involved who have no diplomatic immunity.One young representative named Grimm, however, although absolutely loyal to his government, falls in love with the beautiful foreign agent, Thorne.In the end Thorne, who reciprocates her admirer's love, becomes estranged from her employer, the Italian government, because she does not want Grimm, who has been captured by the conspirators and knows all their secrets, to be murdered.