Carter McKay reveals his true intentions to the Ewings. To avoid bloodshed in the impending range war, McKay offers to buy two sections of the sacred Southfork and J.R. hires his own special brand of mercenaries in preparation for the battle.
The range war violently erupts as Bobby vows revenge after Christopher is caught in the brutal cross-fire. J.R., Bobby, Clayton, Ray, and their mercenaries mount forces to destroy McKay and his men and save Southfork.
There is a startling disclosure at the glamorous Oil Baron's Ball, Dallas' social event of the season. Cally Ewing, J.R.'s new bride, attempts to acclimate herself to the grandeur of Southfork, while he searches for a way to remove her from his life.
A tornado threatens the wedding ceremony while Carter McKay learns that his son Tommy hasn't fully recovered from his involvement with drugs, while Tommy sets his sights on the beautiful and wealthy April.
The 300th episode marks an unusual show in which the feuding Ewing brothers, J.R. and Bobby, get trapped overnight in an elevator, with a defiant Bobby owning the only source of food or drink -- a precious case of expensive wine.
The Ewing brothers are back in business together and set their sights on the biggest oil deal in history at the expense of Carter McKay and Weststar. April comes between Bobby and Tracey after she tries to convince Tracey that her brother is dangerous.
The Ewings head off to Vienna in their battle for the coveted European oil contract. Bobby and April explore their blossoming relationship atop the famed Maria's Mountain in Salzburg. Meanwhile, back at the ranch, Clayton still can't retain his memory.
Vanessa Beaumont travels to Dallas to retrieve her son James, who is deciding on whether or not to make Southfork his home. James, in an effort to immerse himself into the family, enjoys a day out in the fields with Bobby.