Some 3.6 billion years ago, two microbes are playing “king of the pebble” when an event occurs that will separate them and change their future forever. This is the story of the microbe that remains on that pebble, and his amazing journey through time and space.

Led by an incompetent Lieutenant, a troop of soldiers is on the Tomahawk Trail in Apache territory. When he lets the Indians steal their horses and gets slightly wounded in a skirmish, Sergeant McCoy takes over command. McCoy successfully gets them to the fort only to find all the soldiers have been murdered by the Apaches. He prepares the troops for an attack knowing if they survive the Lieutenant plans to have him court marshaled.

U.S. Marshals Nevada Jack McKenzie and Sandy Hopkins are working undercover to capture a gang stealing horses from the Navajos, and to capture the killer of a Ranger. Nevada poses as an outlaw to get in with the gang and find the leader, while Sandy pretends to be a drunken old horse thief that has knowledge of where the Navajos have hidden their ponies.