[Jonster]

... but I've never seen all the first one, and almost fell asleep during the 2nd, and I really can't remember what's going on.
Not going to see it isn't an option
I don't really want to buy the first 2 movies either, so if you could bring me up to speed on what's going on, without spoiling the 3rd, it'll be a) much appreciated, and b) I'll rep you good