Lauren -- a fat, kind of sweet but really fucking dumb and getting older by the minute girl with very little cultural capital and shitty skin she cakes in makeup and a dead-end job and a suffocating sense that she will always be alone and miserable and bored until she perishes forever -- decides to get a puppy.
The dog makes her happy. She's no longer lonely now that she has her animal companion. Her newfound confidence lands her a promotion and an awesome, really tall guy. Her life turns out great.