Tennis shoes

Will the four Heath children continue their family tradition and become tennis champions? 

The Heath kids—Nicky, David, and twins Jim and Susan—come from a long line of ace tennis players. Now their dad has decided it’s time to teach them everything he knows about the game.
 
The twins are the odds-on favourites to become the next champs. Susan shows a lot of promise, winning in tournaments and getting recognition, but she secretly hates the spotlight. Jim’s a good player, but prefers swimming. David, the youngest, loves to sing. Nicky could be a natural, but she’s too busy rebelling to take the sport seriously.
 
Who will become champion? And will it change their family forever?