Adventures in Alien-sitting.Principal Kirkpatrick announces that he’s holding a trial for a dangerous alien at Galaxy High. "Alien dignitaries from around the universe will be in attendance, including a witness, King Fypon." Josh, Brett and Yoko are all ears when Principal Kirkpatrick tells them that they have a very important role in the trial. But their anticipation quickly turns to disappointment when they find out that their assignment is to look after the King’s son, Fypon Jr., whose babysitter canceled at the last minute. When the gang first meets the seemingly innocent and docile alien toddler, they think that their assignment may actually be kind of fun. But once the adults are out of the picture, Fypon Jr. proves to be quite a handful. The moment he’s alone with the team, he begins to cry… an ear-piercing, glass-shattering, alien baby cry! When Yoko tries to comfort him, he bites her finger and scurries up the wall and across the ceiling, escaping! Josh, Yoko and Brett try to run damage control as Fypon Jr. cuts a swath of destruction across Galaxy High, releasing creatures from the GH containment facility; sneaking into Mission Command and creating chaos; and taking an Aerobike for a joyride! When Kirkpatrick reprimands the team for making noise and disturbing the trial, the gang tries to explain that it’s all Fypon Jr’s fault. But when PK looks at the now big-eyed, cooing toddler, he doesn’t buy it. He gives them a stern warning… no more goofing around or they'll be forced to clean the GH. Heeding the Principal’s words, Josh, Brett and Yoko decide to put Fypon Jr. into a fortified playpen. But before long, he even escapes that and commandeers Fitch’s newest gadget – the Exo-Armor Utility Suit (a mechanical suit that one actually gets inside of, a la "Aliens"). If the toddler was a menace before, he’s a terror now. Added to the headache is the fact that the alien criminal on trial has escaped and goes after the toddler. Can the gang stop him before the trial is a bust and Fypon Jr. is lost forever?! In a b-story Mr. Fitch introduces the students to an awesome new piece of machinery.