Faut demander des rumeurs à un aubergiste.
"Skyrim has a lot more flexibility in pursuit of the main quest, even when playing the default Helgen scenario. Alduin's appearance does not force one to pursue the main quest beyond Helgen. So this mod is mainly providing a mechanism to bypass Helgen and not encounter Alduin either. The game will patiently wait for you to follow along. So there's no special effort really needed to avoid it, just don't do it
For most of the starts, it will appear as though your "Live Another Life" quest has stalled. You will not have an active objective telling you where to go next. When you are ready to begin pursuing the main quest, talk to an innkeeper and ask them for rumors. You'll be given a generic rumor about Helgen and told to travel there. You can also simply go to Helgen on your own without anyone telling you to do so."
https://www.nexusmods.com/skyrim/mods/9557