The Twilight Zone (1985) : 1x11

When Dr. Dennis Barrows's car breaks down, he goes to an unusual town where visitors are disliked and townspeople are terrified of lighthouse and where it might shine. The house where Barrows stays the night is shined upon by the lighthouse. It holds a sick child, one which he helps with his medicine. Angry with his adult life, a man, Gus Rosenthal, returns to his childhood stomping ground in Ohio and while digging up an old toy soldier finds himself transported back to when he was a boy.