An American soldier manages to endure his captivity in a Vietnamese POW camp by keeping alive the memories of life in his home town. When he is finally released from the camp, and is discharged from the military, he goes back to his town - but he can find no trace whatsoever of it.

Dr. John Carpenter takes the job of running a health center in a low-income district. He enlists three women to help out who — unbeknownst to him — are actually nuns in street clothes. The church wants to improve the neighborhood but fears that nuns in full habit would be poorly received. Unaware of her unavailability, John falls for Sister Michelle, serenading her with his guitar — which, luckily for him, effectively wears away at her religious resolve.