So I have an idea. It might not be good but you could start in the place where the character is a slave at which could be a ship, the government, just random people, pirates, or just some really bad people (really whatever your going for will tell what you have him a slave of). You could have the character if he is enslaved young or you could have it where he gets taken from the people he is with while they are older. Sometimes maybe you could change perspectives to like the people trying to save him or some other allyes he has to save him you can have the perspective change to them(you could also change to someone who doesn't know the character is there that runs into the character and saves them). after a while it would be nice for the character to escape or be saved so that the story moves on. You could also add the characters recovery process if you make it to where the character is traumatized or needs to get over things. I was kinda just listing things off so im sorry if you can't make sense of this but I hope it give you some ideas. Also thank you for following me you are my first follower and I honestly didn't think I would get any because I don't plan on writing anything, not anytime soon anyway. Anyway again I hope this helps.