 Then Police Lieutenant Dan Barton stages a public dismissal from the police department, in order to join the saboteurs ring and learn the secret code they have been using.To further assist his efforts (especially after his superior, the only person to know that Barton is working undercover, is murdered), Barton assumes the secret identity of the Black Commando, a masked man who is wanted both by the villains (who want the secret formula they think he has) and police (who are also searching for Barton for murder).Finally, Barton "steals" the formula and is captured by Thyssen and put under the protection of the sabotage ring.