Restart scene properly

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Hi guys,
I'm making a board game, and I use PUN for the multiplayer online game. But I have some weird issues when I restart scenes. For example, when the players both want to replay :
- The master leaves the scene "game", load a scene "transition" in which this is only a loading scene, in order to destroy all GameObjects in the scene "game", then reload the scene "game" like a new game.
- After the this, because of PhotonNetwork.automaticallySyncScene = true; the client do the same thing.

When I restart, in the master everything works fine, but in client, I have many issues : variables correctly initialised, or some nullPointerException (what I don't have when I launch the first time a game)

So I want to know : How to clear RPC an remove everything in a scene, and when I reload a scene to have my scene knew as if it's the first time I load it.

^^Sorry for my bad English, I'm a french speaker. Thanks for you answer