Eugene Solari is fanatically jealous of his beautiful wife Enid. While on a mission for her father, she visits Major Trevor. Her husband finds out and, enraged, rushes to Trevor`s house. Enid tries to beat him there to warn Trevor, but is too late--when she gets there Eugene shoots her and then kills himself, but not before he names Trevor as his killer. Trevor is arrested for his murder. A foreign agent, wanting a secret formula that Trevor is in possession of, kidnaps Enid and gets word to Trevor that he will clear Trevor`s name and return Enid to him if Trevor will give him the secret formula.