Plankton decides to close the Chum Bucket and move to a new town, but Mr. Krabs still suspects he is up to something.
"Plankton Retires" contains examples of:
- Big Ball of Violence: Happens between Mr. Krabs and Plankton that SpongeBob and Squidward get swept up in. SpongeBob answers the phone on top of the cloud.SpongeBob: Hello? Krusty Krab, may I take your order? No, Mr. Krabs is unable to come to the phone right now. He's trapped under a dust cloud brawl. Yeah, he'll have to call you back.
- Green Around the Gills: Happens to SpongeBob while he and Mr. Krabs are spying on Plankton from atop a ceiling fan that's making him dizzy.
- Medium Blending: During the montage when SpongeBob's, Mr. Krabs's, and Plankton's robot doubles are having fun against live action backgrounds.
SpongeBob accidentally picks up King Neptune's magic trident, leading to chaos around Bikini Bottom.