User blog comment:Poptropica411/Phineas plus Isabella equals Phineas and Ferb: Across the Second Dimension in Fabulous 2D?/@comment-74.98.161.253-20110105002443/@comment-3329115-20110225020643

Sadly.. it IS the last episode of the series because it is the last episode of season three and dan and swampy said that they only had enough days of summer for three seasons.