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The Preachification of Convincing John

recommended age Unlock co-watching from 2

Mokey Fraggle grows troubled that Fraggles keep eating the crystal towers the hard-working Doozers build, so she persuades her friends to swear an oath to stop, even bringing in the smooth-talking Convincing John to sway everyone. Soon Fraggle Rock fills with unfinished buildings, and Mokey discovers the Doozers actually need the Fraggles to eat their towers so they have room to keep building. She admits she was wrong, apologizes, and releases everyone from the oath. Alongside this, Doc putters in his workshop with his dog Sprocket, puzzling over how to sew a button onto a fried egg.

The Gecko Effect

recommended age Unlock co-watching from 4

Chris and Martin Kratt set out to discover how a gecko climbs on smooth surfaces. After a failed suction-cup experiment, they miniaturise themselves to study a Tokay gecko's toe pads up close and learn about microscopic electrostatic hairs. Meanwhile, the villain Zach Varmitech steals their miniaturiser and traps the team, who escape by using their new gecko powers to climb out. The episode ends with the inventions reclaimed and the brothers naming the gecko 'Okay'.

Mystery on the Prairie

recommended age Unlock co-watching from 4

Brothers Chris and Martin Kratt explore the North American shortgrass prairie, where they investigate two animal mysteries: who is impaling insects and small prey on thornbushes, and why one egg in a nest looks different from the rest. With help from their crew aboard the Tortuga, they discover that loggerhead shrikes use thorns instead of talons, and that buffalo birds, also called cowbirds, secretly lay their eggs in other birds' nests. After mistakenly 'rescuing' a cowbird chick they name Moo, they realize the chick belonged where it was and decide to raise it themselves. Live-action segments with the real Kratt brothers and footage of actual prairie animals bookend the animated adventure.

Mom of a Croc

recommended age Unlock co-watching from 4

Chris and Martin Kratt shrink down disguised as crocodile eggs to study a Nile crocodile mother nicknamed 'Crocodilla' along an African river. They count 57 eggs, observe how she regulates nest temperature, and watch her defend the nest from monitor lizards, hippos and other predators while Aviva, Koki and Jimmy support from the Tortuga base. The team discovers that egg temperature decides the hatchlings' sex and helps move the baby crocs safely to the nursery pool. By the end Aviva, who started out disliking crocodiles, admits she was wrong to judge them before knowing them.

Rattlesnake Crystal

recommended age Unlock co-watching from 4

Chris and Martin Kratt and their crew crash-land their ship, the Tortuga, in the Sonoran Desert and find that its power crystals, made of a rare material called tellurium, are failing. Racing a countdown, the brothers use heat vision and 'rattlesnake powers' to search underground through ground squirrel tunnels, learning about real rattlesnakes along the way. They find tellurium crystals in a den full of snakes and get them back just in time to save the ship. The episode closes with live footage of the real brothers tracking wild rattlesnakes at a desert museum.

Voyage of the Butterflier XT

recommended age Unlock co-watching from 4

Brothers Chris and Martin Kratt set out to prove that a single monarch butterfly can travel three thousand miles to Mexico. Shrinking to butterfly size in a tiny flying vehicle, they follow a monarch named Maxilla through predators, a windstorm and a fashion designer who wants to capture butterflies for accessories. Along the way they explain the monarch life cycle, migration and survival tricks. Maxilla lays her eggs and dies, and a new generation hatches to continue the journey north.

Little Howler

recommended age Unlock co-watching from 4

The Kratt brothers discover an orphaned wolf pup, Little Howler, has stowed away in a backpack, and set out to solve the mystery of where he came from. Retracing their day tracking a wolf pack through the northern woods, they learn how wolves howl, run marathon distances and team up with ravens, while dodging a charging moose and a cougar. Once they find the pup's den, they use wolf body language and his familiar scent to return him to the pack. The episode closes with real footage of the pup growing into a young wolf able to run on her own.