Balto 1: Wolfdog called Balto saves a town from Bacteria. Becomes in love with a dog called Jenna. 
Balto 2: the daughter of Balto/Jenna called Aleu goes on an adventure to found her. Becomes a leader of the wolf pack. 
Balto 3: the Local Mail town sled dog team gets a new rival called Duke and beat him in the race and save his life later.