what happens when Plan B falls through?

We're told by "The Comic Toolbox" by Jon Vorhaus that in order to make the stakes higher, there must be a reward for success but also a punishment for failure. In other words, Plan Bs just make things boring or unfunny.

I think my life is trying to model itself as a comedic sketch. I wonder what the punchline will be. And who's laughing?!

"Giving up never felt so good,
Welcome to Plan B."
-Five Iron Frenzy