Teenage siblings Tom and Julie (aka The Intrepids) were the hosts of a radio show, and unbeknownst to their parents, would personally get involved in their callers' plots of adventure and intrigue. The teenage sleuths had a knack for getting into trouble, but also had a knack for getting out of it, thanks to their hi-tech gadgets. The show was French, but dubbed into English for anglophone viewers outside Quebec.