Chancie has left for his former boarding school in Orange County, while Herb copes with still being stuck with Princess, and now foreign exchange student Gorgo is added to the mix, along with an often visiting Twofer.
Herb and Princess have to figure out what to do with Morph after Herb reveals to him exactly where Magma has been all these months and Morph's reaction forces Herb into desperate action.
Herb feels the pain of Princess' training regimen, as she and Gorgo help a sciatic Herb into the apartment, and Morph has some startling news about Iggy.
Morph works with Gorgo to try to keep him from flunking 7th Grade and giving Herb an excuse to ship him back to Spain, and Herb meets Twofer's, not-so-pleasant, twin brother: Deever.
Herb talks to Gorgo about his continued stay in their cramped apartment on his foreign exchange student program while Twofer watches.
Iggy takes exception to Princess paying him some unwelcome attention, while Herb and Gorgo prepare for a revelation concerning Morph.
In the series finale, Herb and Iggy have a talk about their past relationship, Herb's current status running a kid sanctuary, and Iggy's new plans for his future.