What? No trilogy?

So last night we read the first part of the parable of the Prodigal Son--the part featuring the prodigal himself. Tonight we read the part of the snotty older brother. Afterwards, Frodo pipes up, "So tomorrow we read about him going in to the party?"

Am not really sure what bothered him about the negative answer--the fact that the story didn't end the way he expected, or that the brother didn't get his dad's point.