Watch The Beach Party at the Threshold of Hell for Free: How to Stream the Movie Online at 123Movies. . Based on the concept of "New America" in the year 2097, two decades after a nuclear apocalypse, Tex Kennedy, two robotic ex-secret service agents, and a female cannibal journey to find a famously dangerous area known as the "Threshold of Hell" to gain access to a radio tower to unite the survivors of the apocalypse.