Bobby questions his role at Ewing Oil, as J.R's way of doing business does not sit well with him. Jock does not support this, and confronts J.R. During the discussion, Jock suffers a heart attack. Bobby deals with his father's illness, by joining Ray working at Southfork. Jock knows J.R is not telling him everything, and wants Bobby back to keep things on the straight and narrow at Ewing Oil, the company he started. While in the hospital, Jock finds out he needs open heart surgery. All the Ewings are there to support the patriarch of the family.