Pete (Nick Stuart) and Bill (John Darrow) are childhood rivals who continue to feud in high school, especially when they both develop feelings for Eleanor Barrett (Sally Phipps). Their rivalry threatens to disrupt the school basketball team, but they eventually make amends.
Sir James Blake has retired from Scotland Yard so that he can assist his niece Hope and her friend Jerry in developing an apparatus they have invented. Sir James thinks that their invention has the potential to prevent wars, and plans to donate it to the League of Nations. But a gang of criminals...