Merlin and William still trained like they used to with the knights when they weren't too busy helping the village. No one knew of their identity besides Hunith and they had to keep it a secret. If word were to escape that they were still alive, they would be killed.
The kingdom of Asectian (Merlins ex kingdom) was taken over and ruled by a man who hated magic with all his heart. Just like Uther, he executed those who wielded it.
In Camelot only Gaius knows about Merlin and when William died merlin grieved for a long time. Merlin had to pretend he was horrible with a sword so he wouldn't be suspected. (His clumsiness was always a part of him).
When the great dragon was released Merlin and Arthur found Balinor again and Merlin was relieved, only to go into grieving as soon as he died.
The only thing that happened differently was that when morgana took over Uther didn't lose his mind for long. Only for a while. He got better after the darkest hour.
Lancelot died but uther lived. Now, Arthur is once again prince with the knights of the round table at his side. And none of them know merlins greatest secret.
Should i write a Sequal? It would probably be longer than this. This is more of an introduction. Review?