Down-and-out lounge singer Johnny Slade is hired by a mystery man to open a hot new club, the catch being he’s given a new–and terrible–song to sing each night. Noticing that whenever he sings one a new crime is committed, Johnny gradually realizes his songwriter-benefactor is a powerful mob boss in hiding and his “Greatest Hits” are the only way the man can give orders to his crew…

During a commemoration for Japanese soldiers fighting in the US Army during World War II, Mr. Miyagi meets the widow of his commanding officer. He gets to know her granddaughter Julie, an angry teenager who is still feeling the pain of losing both her parents in an accident and is having problems with her grandmother and her fellow pupils. Mr. Miyagi decides to teach her karate to get her through her pain and issues and back on the right path.