J.R. tries to get Jack involved in Ewing Oil business. J.R. invites Angelica Nero to the annual Southfork rodeo. Sue Ellen's mother Patricia tries to tell Sue Ellen to stay away from Dusty. At the rodeo, Sue Ellen confronts Mandy Winger and J.R. has an unpleasant exchange with Patricia. J.R. has a fight with Sue Ellen over Mandy. Angelica does business with J.R. and Jack, and then meets Pam. Sue Ellen tells Clayton that she can't live at Southfork. Donna has an accident and is rushed to the hospital. Angelica tries to get close to Jack. Donna and Ray lose their baby.