AllMovie

Previously seen on two episodes of the original Avengers, those malevolent metallic menaces, the Cybernauts, are at large again. This time, the man behind the Cybernaut invasion is Kane (Robert Lang), a crippled and disfigured double agent who has a score to settle with John Steed (Patrick MacNee). Part of the scheme involves the "rebirth" of the supposedly dead Kane with a new Cybernautic body--and the superpowers that go with it.