once upon a time there was a little blue sock that lived with his mate. 

Once upon a time, there was a little blue dolphin that lived with his mate. 

They were really happy living in the ocean. But one day his mate got lost and never appeared again.

The little blue dolphin was very sad because he was lonely. He thought that maybe that was how one of his friends felt. Little black dolphin had lost his mate too a long time ago and had lost faith on finding someone as good and big-hearted as his mate. But destiny had something else for them...