Six years ago NASA discovered the possibility of alien life within our solar system. A probe was launched to collect samples, but crashed upon re-entry over Central America. Soon after, new life forms began to appear and half of Mexico was quarantined as an infected zone. Today, the American and Mexican military still struggle to contain "the creatures," while a journalist agrees to escort a shaken tourist through the infected zone in Mexico to the safety of the U.S. border.
Headstrong Thomas Dunson starts a thriving Texas cattle ranch with the help of his faithful trail hand, Groot, and his protégé, Matthew Garth, an orphan Dunson took under his wing when Matt was a boy. In need of money following the Civil War, Dunson and Matt lead a cattle drive to Missouri, where they will get a better price than locally, but the crotchety older man and his willful young partner begin to butt heads on the exhausting journey.
When his cattlemen abandon him for the gold fields, rancher Wil Andersen is forced to take on a collection of young boys as his cowboys in order to get his herd to market in time to avoid financial disaster. The boys learn to do a man's job under Andersen's tutelage; however, neither Andersen nor the boys know that a gang of cattle thieves is stalking them.
Retired wealthy sea captain Jim McKay arrives in the Old West, where he becomes embroiled in a feud between his future father-in-law, Major Terrill, and the rough and lawless Hannasseys over a valuable patch of land.
Young Travis Coates is left to take care of the family ranch with his mother and younger brother while his father goes off on a cattle drive in the 1860s. When a yellow mongrel comes for an uninvited stay with the family, Travis reluctantly adopts the dog.
A cattle baron takes in an orphaned boy and raises him, causing his own son to resent the boy. As they get older the resentment festers into hatred, and eventually the real son frames his stepbrother for fathering an illegitimate child that is actually his, seeing it as an opportunity to get his half-brother out of the way so he can have his father's empire all to himself.
In 1864, during the American Civil War, Mexican cattleman Alvarez Kelly supplies the Union with cattle until unexpected circumstances force him to change his customers.
Former buffalo hunter and entrepreneur Wyatt Earp arrives in the lawless cattle town of Wichita Kansas. His skill as a gun-fighter makes him a perfect candidate for Marshal, but he refuses the job until he feels morally obligated to bring law and order to this wild town.
Cattle baron John Chisum joins forces with Billy the Kid and Pat Garrett to fight the Lincoln County land war.
Just outside of the Malian city of Timbuktu, now occupied by militant Islamic rebels who impose the Sharia on civilians and inconvenience their daily life, a cattleman kills a fisherman.
In 1896, Jeff Webster sees the start of the Klondike gold rush as a golden opportunity to make a fortune in beef...and woe betide anyone standing in his way! He drives a cattle herd from Wyoming to Seattle, by ship to Skagway, and (after a delay caused by larcenous town boss Gannon) through the mountains to Dawson. There, he and his partner Ben Tatum get into the gold business themselves. Two lovely women fall for misanthropic Jeff, but he believes in every-man-for-himself, turning his back on growing lawlessness...until it finally strikes home.
Two Virginians are heading for a new life in Texas when they witness a stagecoach being held up. They decide to rob the robbers and make off with the loot. To escape a posse, they split up and don't see each other again for a long time. When they do meet up again, they find themselves on different sides of the law. This leads to the increasing estrangement of the two men, who once thought of themselves as brothers.
A young cattle farmer is approached by an unscrupulous veterinarian to make a shady deal with a notorious beef trader.
A New Mexico cattle man and his strong-willed daughter clash over land and love.
Cattle baron Matt Devereaux raids a copper smelter that is polluting his water, then divides his property among his sons. Son Joe takes responsibility for the raid and gets three years in prison. Matt dies from a stroke partly caused by his rebellious sons and when Joe gets out he plans revenge.
A rich landowner of Wyoming fights to prevent the Texas herds from trampling his rich meadows.
When her husband dies en route to America, Martha Price and her daughter Hilary are left to carry out his dream: the introduction of Hereford cattle into the American West. They enlist Sam "Bulldog" Burnett in their efforts to transport their lone bull, a Hereford named Vindicator, to a breeder in Texas, but the trail is fraught with danger and even Burnett doubts the survival potential of this "rare breed" of cattle.
Marshall Dan Mitchell, who is the law in Abilene, has the job of keeping peace between two groups. For a long time, the town had been divided, with the cattlemen and cowboys having one end of town to themselves, while townspeople occupied the other end. Mitchell liked it this way, it made things easier for him, and kept problems from arising between the two factions. However…
An Australian sheep man comes to Montana looking for grazing space, is opposed by local ranchers and a wealthy cattle-woman.
A farm girl learns she is a princess and is swept away by a tornado to the land of Oz.