 International Rescue suspect sabotage, and Lady Penelope, Tin-Tin and Parker travel to the Swiss Alps to investigate the band's current tour venue, the mountain resort Paradise Peaks.There, they discover that the RTL2 attacks are being co-ordinated with the aid of an advanced computer called a "Cham-Cham".Filmed in late 1965, "The Cham-Cham" has a show business theme and was written in the style of classic Hollywood musicals.