Sweet summer science; the kids arrive at Lullah's mysterious summer camp and attempt to fix her laser; mutant mischief; the kids must face the Mutant thieves who stole their food.
Lullah wants alone time and creates a Manatee-Nanny to watch the kids; Pliny must choose - support Larry's noodling habit or keep him safe.
Pliny tries to keep a promise when the kids play with a strange diorama; Sara feels guilt after conning Larry out of his collectible beans.
Chip wants to make a breakfast that will blow his friends' socks off; Larry saves a baby lizard and swears to protect it from harm.
Chip tries committing to the ways of survivalist Nils Vulfen; when the kids encounter a dolphin, everyone is excited - except Merian.
Lullah sends Sara to stop a rover from drawing a dirty rear on the moon; Francis goes on a quest to deliver a letter.
Chip is forced to use slap-based tactics to defend a bullied mutant; the kids prank accidentally lures one of Lullahs nemeses to the island.
Pliny and the Kelp Folk try to beat Lullah at her own game; Mr. Okay worries Lullah is going to replace him.
Larry must confront his jealousy or be consumed by it; to keep a secret, Lullah is forced to help Pliny assist a grub.
A spiraling Merian tries to figure out exactly why Francis left her party; the kids vie for a presidential sash.
Merian tries to save Dr. Lullah's fish counter from a life of busy work; the kids put on a play to warn mutants about a disaster.
Kids face fears to retrieve lost ball as Lullah tricks them into devious game.
Larry seeks to explore the island's nighttime entertainment; Chip aims to impress his rival by presenting himself as a formidable, apex predator worth hunting.
LEAPIN LEGS! Merian is sent to a special place to learn how to relax. NICE TO PEAT YOU! Pliny dislodges a naturalist from a bog and joins him on a journey of discovery.
CHLOROPHYLL-AINS! Francis has to protect a plant from a nefarious threat. EGGS-ISTENTIAL CRISIS! Merian struggles to open an egg salad stand with Pliny.
The kids get sucked into a white-hot, Mutant soap opera; Sara attempts to nail the perfect hairstyle so she can be the star of Francis' painting.
Merian takes on the case of a destructive space chimp; Pliny wants to play Geoplomacy when the kids discover six sandbars.
Sara lies in order to join the kids' Elephant Triumvirate book club; Larry asks Mr. Okay to help unlock the true power of his dud Zorb.
A Mutant trio sets out to discover the purpose of some weird-shaped berries; a new visitor offers the kids the summer of their dreams.