During a Cavalry massacre at an Indian village, two brothers, searching for their captured sister, rescue a white woman long ago kidnapped by the Cheyenne. They ride for their lives, haunted by the chant of the tribal Death Song.

A Mexican bandit is about to be executed in the United States, so his brother takes over a train and holds the passengers as hostages unless his brother is released. Now both the Americans and Mexicans are baffled as to what to do. One of the passengers — who wrote the letter for their captor — has a suggestion: call mercenaries Hank Brackett and Johnny Reech. They do, and as expected they do come up with a plan, but the president of the railroad is not sure if it will work.

The government's new urban renewal policy results in street gangs fighting for control of the inner cities. While most of the residents flee, one factory owner determines to fight the gangs for his property.

A party of tourists -- including a state senator, a park ranger who was her one-time lover, a cantankerous professor, and an escaped convict -- are trapped deep inside the caverns of an unnamed national park, rescued briefly, and then caught in a second cave-in.