Jonathan and Mark emerge from a meteor crater to offer extraterrestrial encouragement to Adam, a young, bullied orphan whose eccentric grandfather is in danger of losing him to a heartless social worker.
Jonathan and Mark's latest assignment involves Harold, an errant angel who's been on probation for two centuries because in spreading happiness he's forever breaking the rules.
Jonathan and Mark help a whole town to remember how a young soldier who was killed in Vietnam touched their lives when the attempts of his father to have a memorial made to commemorate his son are ignored.
Mark becomes deeply stricken with grief after believing he caused two tragedies involving young girls - one of them a victim of a car accident, the other trapped in a house fire - in a matter of hours.
Mark and Jonathan try to reunite a mother with her son who is now the Deputy Premier of the U.S.S.R. When he is told that his mom would like to see him he believes Jonathan is with the CIA and not an angel.
The Walton family is excited to learn that John Sr. will be coming home for Christmas. However, when a storm threatens his arrival and he's nowhere to be found, John Boy embarks on a life-changing journey to find him.
Summer is coming to a close but the heat has become nearly unbearable again when a cattle truck rolls into Heartland. Inside, Scott and the hands find a load of sick and thirsty horses, and the driver turns out to be Ty's father.