WATCH_DOGS

I bought the Watchdogs season pass yesterday and the 3 added SP missions are 'The Palace ', 'Signature Shot', and 'Breakthrough'.

I was able to see all of them on my map, and I began the Breakthrough mission...
It starts with basically a criminal convoy thing - take out the 2 bad guys, but after that, nothing. No updated map, no further 'Breakthrough' icon on my map anywhere at all, just nothing.

The description for Breakthrough is as follows:
"Part driving, part assassination, all mayhem. The Chicago South Club is meeting with some corporate CEOs and it’s up to Aiden to put an end to their dealings. Scramblers have been hired, so you’ll have to track down their vehicles and take them out before you can locate the secret meeting area and eliminate everyone in attendance."

So what do I have to do to find this 'secret meeting area '?
I'm assuming it should have shown up on my map, or at least some hint somewhere as to how to go about it, like the game does with everything else, but as I said, nothing... zip, nada, zilch, no indication whatsoever as to what I'm supposed to do next? :confused:

Is there something I'm overlooking? A bug, maybe? I've been thoroughly scouring my map, and have looked over every square inch of it, but with no joy...

Help please? Thanks. :)