Open with a guy running flat out, in hurry to get somewhere obviously important, he checks his watch.. looks like its 2:00 or whatever..
Hes blocked by this and that, cars, dogs, what ever crazy things you can think of.
The action is non stop for 50 seconds. Finally in the last few seconds, we see the goal, he approaches the goal, what is it? Its a service counter of some kind.. its up to you WHAT he missed but whats important is that he missed it by "1 minute"
A sign reads.
Gates closed at 2:00 PM: No Exceptions
Maybe its the last elevator ride out of hell,
maybe its free concert tickets,
maybe its a new life saving medical treatment trial,
maybe its the last train out of town and hes now trapped in the city that he just planted a nuke in..