Cater McKay plans to hurt Ewing Oil using the tanker disaster. Cliff and McKay collaborate against the Ewings. Bobby talks to the captain of the Ewing tanker. Christopher feels left out because James and John Ross socialize a lot. Kay Lloyd reappears in Bobby's office with an ominous warning from Washington. Cally thinks that J.R. has been sleeping with Michelle. Bobby and Christopher have a father-to-son talk about John Ross' situation and the increasing conflicts between the two boys. Michelle plots to break up Cally and J.R.'s marriage. Michelle sleeps with James. Cally pays Alex a late-night visit with words of revenge against J.R. on her lips.