Episodes like this is what makes the show fun. Pete had gained access to an inheritence and wanted to get it, but the thing is that he didn't get what he anticipated.
When Pete got rid of his inheritence, he must get it back again or else he will be sued. This is one of the episodes where Pete showed responsibility to the mistakes he did. After all, nastiness is not too good.
There's an nice little tidbit in this episode that really surprises people, and that is the presence of another Goofy and Pete, with different personalities. Just like Peg said "Don't you love it when it happens?", you be the judge to her question, but I'm saying yes.