⁣While the Martin's are Christmas shopping, Lassie saves a child from getting hit by a truck and is struck herself. Dr. Weaver is uncertain if he can do the operation to save her and the specialist who can is unreachable.

Travers holds back on accepting to Clarence's proposal until she is sure she can live with him. So the couple decide move to the Oxfordshire countryside and begin a trial-run. Guest starring Richard Caldicot.