Susan Tuttle, Wilga Roberts, Patricia Roberts and their pal Kenny are train surfers. Extreme to the core, their harrowing experiences on top of a train would scare the hell out of any 15 year old. Their ride comes to the end of the line, like so many real train surfers when one of them (Patricia) is impaled on a water pipe. The others make a pact to do something good for the planet in her name or come back and ride the train again in 15 years to their death. 15 years later Susan and Kenny have forgotten about the pact but not Wilga, he has spent his time in prisons and mental wards waiting for this moment, to honor his dead sister. Now 15 years later, he's come to collect on the Pact. Wila murders Susan's boyfriend and kidnaps her daughter to blackmail her into riding with him one last time to the end of the line.