When Experiment #601 is activated, things are looking bad, as he is beating up the islanders. Stitch is ready for it, but when he eats the combination of a left tennis shoe and macadamia nuts, it creates a toxic poision, which erases all of his super abilities. Now Lilo has to retrain him from scratch, but Stitch doesn't like the idea.

It's Lilo's birthday, but no one has remembered. So, she decides to give herself her own party. However, during the day, Experiment #303 is activated and wipes Lilo's, Stitch's and Gantu's memory. Lilo and Gantu, who think they are Martha and Lenny go after Stitch, who has returned to his natural destructive programming, and so they think is a criminal.

Experiment #602 - Sinker

Lilo is having high hopes for Keoni and his sailboat entry in a regatta, until his boat is sliced in half by Experiment #602. Soon Lilo, Stitch, Jumba and Pleakley are stowaways on a cruise ship. So while Pleakley is fascinated by shuffleboard, and Stitch digs into the buffet, Lilo must find the ship's Captain and warn him about Experiment #602.

Experiment #199 - Nosy

Nani wants a job at Mr. Jameson's hotel, so she invites him and his son Keoni over for brunch to prove how much 'Aloha Hospitality' she has. Unforunately, Experiment #199 has been activated, and he seeks out enemy's secrets. However, a glitch in his programming has made him into nothing more than a gossip. So now Lilo and Stitch must stop him blurting out the family's secrets to Mr. Jameson and Keoni.

Exxperiment 316: MORPHOLOMEW

(Crossover with American Dragon: Jake Long)

Lilo enters the island's skateboarding competition in an attempt to win the heart of her one and only crush, Keoni. At the same time, Jake, Gramps and Fu Dog visit the island to check out reports that magical creatures - actually Jumba's experiments -- are running rampant.