Quantum Leap (1989): Season 1, Episode 5

1 - 5: How the Tess Was Won - August 5, 1956

As a veterinarian in rural Texas, Sam's mission appears to be winning the love of an heiress to a large ranch.
Sabotaged by another suitor, Sam fails and finds that his true goal was to save the life of a sick piglet, and to help an unnamed cohort with a task he's performing.