We spend most of this episode in the past, visiting events that fill in the details of the Bizarro world. While the backstory is nice, it doesn't advance much of the plot in the present. It's a risk when writing flashbacks since unless the visits to the past contain more than just "so this happened, but it doesn't raise any questions", it's dull. We ended up skipping ahead during the flashbacks since they got boring. This episode eventually catches everyone up to the end of the prior episode in the series.