No, the script has a storage that checks if the player has already acquired his quests.
CHECK:
Lua:
if player:getStorageValue(123123) == 1 then
If the player doesn't already have this storage, the script will set all the established quests. And if the script verifies that the player already has this "check storage", it won't execute the script.
Only pay attention to changing the check storage (
123123), if you're going to create other scripts like this.