You've blasted your way through the hedge maze populated by unspeakable monstrosities, and after spending what seems like most of your ammo, you've finally cleared the place out. And look! Up there on the pedestal! It's the keycard you need to open that door you passed a while back! Looking behind you once more to make sure it's safe, you take the keycard... If the game goes into a cutscene as you approach a Plot Coupon, it's almost guaranteed that this trope will come into effect.