| If the PCs are the protagonists of the story, and
The PCs have no goals, then
You are not going to have an interesting story. Just a bunch of stuff that happens.
Once you know what the PCs want, you can make NPCs who oppose them (directly or indirectly). When the PCs meet these NPCs, conflict will arise, dice will be rolled, and when it's all done you'll have a story.
__________________ "If people bring so much courage to this world the world has to kill them to break them, so of course it kills them. The world breaks every one and afterward many are strong at the broken places. But those that will not break it kills. It kills the very good and the very gentle and the very brave impartially. If you are none of these you can be sure it will kill you too but there will be no special hurry."
-- Ernest Hemingway, "A Farewell to Arms" Burning Empires: Boldaq
Keep on the Shadowfell | 
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