Well, Joel 2 is really just one long, angry rant from God. He starts off by warning all of us that He's about to unleash some “awful things” on us, and then goes on to describe a bunch of disasters like fire, darkness, and a whole lot of locusts. Like, a lot of locusts. We’re talking enough locusts to cover the entire land and eat up all the crops and whatever else gets in their way. Plus, God says that He's going to send a big army to basically do whatever they want. So, you know, don’t mess with God! But, if you do repent, He promises to be merciful and take away the locusts and the darkness and all the other stuff. Anyway, that’s Joel 2 in a nutshell.