The Oil Baron's Ball opens up a new era for Miss Ellie. Sue Ellen is shocked when Dusty shows up at the Southern Cross while she is there visiting Clayton. Lucy decides she must get on with her life and put the past behind her. Ray tries to take a hand with his rebellious young cousin while he and Donna are in Kansas. J.R. and Bobby realize that the Ewings will be alienated from the oil cartel if Cliff Barnes works with Marilee Stone.