When you go through a lot in life, things that would otherwise destroy a person, and you come out, ready to take on the world, you start to think you're invincible. News flash: you're not.
When you've told yourself that you've had enough and that you're better off. Think again. Just when you thought your life will move on smoothly, the unexpected happens.
Note: Aside from the obvious exceptions, the places, names, etc... are fictional.