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"Who Let the Moths In?"
Season 4, episode 2A
(Overall episode #153)
Who let the moths in title card.PNG
Premiere date
United States of America United States of America
May 29, 2020
Written by Gerard Foster
Directed by Christian De Vita
Viewer count (millions) TBA
Episode Guide
"Heroes of the Sky"
"Commander Meow"

"Who Let the Moths In?" (also known as Gluglu et la flûte de Sorceline in French) is the first segment of the 2nd Season 4 episode of PJ Masks.[1]



The moths infiltrate HQ, and Gekko won't admit that he let them in until it is too late.


With the help of Motsuki, the Papinuits infiltrate the QG. Gluglu won't admit he let them in until it was too late.


The following characters appeared in the episode "Who Let the Moths In?":


The episode begins as the PJ Masks return home after fighting off Romeo, Gekko upset about messing up during the battle. At the same time, Motsuki spies on the team after flying off with the moths due to Luna Girl’s Moon Whistle playing. The next day, the kids receive a letter during their galaxy lesson in class, saying that Luna Girl is planning something big. That night, PJ Robot scans the letter, and the PJ Picture Player shows the villainess playing her moon whistle. Feeling that it might be a trap, and fearing that he might mess up again, Gekko offers to stay with PJ Robot and be on the lookout for any trouble.

Catboy and Owlette take off to the park in the Cat-Car as Motsuki watches from behind. Seeing that Gekko is not with them, she goes to headquarters to present Gekko with “pizza.” He comes out, refusing to do anything with her, and she opens the pizza box to release the moths hiding in there. They carry Gekko away from the entrance, and they and Motsuki quickly enter HQ. Catboy and Owlette contact him in concern, to which he replies that he is just fixing HQ’s door.

The two soon arrive at the park and grab Luna Girl’s attention with the letter that one of the moths sent them. Luna Girl takes a closer look at the letter, and she realizes the drawings were made by Motsuki. She tells them that it was only a trick to get the PJ Masks away from headquarters. Catboy and Owlette start running back to the Cat-Car, but Luna Girl stops them and asks them to listen to her moon whistle. When they refuse, she freezes them with her Luna Magnet and resumes playing, shattering the objects within the pitch’s range.

Luna Girl finishes, and she asks Catboy and Owlette to applaud. The two ask her to unfreeze them first, which she does so. They applaud, and while she bows, they take this opportunity to run to the Cat-Car. They leave just as Luna Girl notices, and she throws her moon whistle away in anger. The two contact Gekko again, who is back in HQ after using his Super Gekko Muscles to pry open its door. He claims that everything is fine, until Motsuki shows up in the control panel’s screen.

Gekko quickly breaks off contact with Catboy and Owlette and orders Motsuki to leave. Motsuki sends the moths off in response, and they spread out in groups around HQ. One group enters the power chamber, and they mess with its controls. Gekko and PJ Robot desperately try to fix the system, when Motsuki offers to help. Despite PJ Robot’s disapproval, Gekko lets her, and she presses HQ’s rocket function, revealing that she is going to fly to the moon to make HQ her own headquarters. Gekko and PJ Robot try to stop her, but she traps them in bubbles. She then turns on the video camera, and reveals that the Cat-Car has been affected with the moths’ infiltration as well.

Motsuki suddenly notices HQ flying erratically, to which Gekko tells her it is because of her moths infiltrating its system. She calls the moths to regroup, and the controls start working again. HQ heads straight for the moon, and she releases Gekko and PJ Robot outside. PJ Robot catches Gekko as they fall, and he is placed safely to the ground, while Catboy and Owlette quickly return to HQ as the Cat-Car is also working again.

Gekko tells Catboy and Owlette what happened, and apologizes about not telling the truth earlier. They comfort him, telling him that everyone makes mistakes, and that they could have helped him if he told them about the problem sooner. Luna Girl suddenly flies by them, and she explains that she threw her moon whistle away because no likes her music. Getting an idea, Gekko asks the team to help find her whistle, and everyone returns back to the park.

In a few moments, Owlette finds the moon whistle. She gives it to Gekko, and PJ Robot flies him up to HQ as he plays, holding a speaker. Soon enough, Motsuki hears its music, and she and the moths leave the structure. PJ Robot accesses its system, and HQ returns to its proper place. Gekko and PJ Robot return, when Luna Girl takes her moon whistle away from Gekko, who comments that she threw it away. She claims that everyone makes mistakes, and she continues practicing as she flies off, while the PJ Masks proclaim their signature victory phrase.


  • Don't be afraid to tell the truth (it's good to be honest).
  • Everyone makes mistakes; nobody is perfect.


  • This episode, along with "Commander Meow," is the last episode of Season 4 to premiere on a Friday.
  • The episode's title might be a reference to the song, "Who Let the Dogs Out!".
  • Luna Girl introduces her Moon Whistle in this episode, which she uses for the first time.
  • This episode, along with "PJ Sky Pirates" and "Big Sister Motsuki," is one of the post-"The Prank Wheelz" episodes to have Romeo's Lab.
  • Motsuki is the third villain to ring the PJ Masks’ HQ’s doorbell.
  • In this episode, Teacher states that the Kuiper belt is at the edge of our galaxy, whereas it is actually at the edge of our solar system.
  • The episode's storyline shows some similarity to "Gekko's Stay-at-Home Sneezes."


Episode list
| Blame it on the Train, Owlette | Catboy's Cloudy Crisis | Owlette and the Flash Flip Trip | Catboy and the Pogo Dozer | Gekko and the Super Ninjalinos | Owlette's Terrible Pterodactyl Trouble | Catboy and the Shrinker | Owlette and the Moon-Ball | Catboy and the Butterfly Brigade | Owlette the Winner | Speak UP, Gekko! | Catboy and Master Fang's Sword | Catboy VS. Robo-Cat | Owlette and the Giving Owl | Catboy and the Great Birthday Cake Rescue | Gekko and the Snore-A-Saurus | Looking After Gekko | Catboy and the Teeny Weeny Ninjalino | Catboy's Tricky Ticket | Gekko and the Missing Gekko-Mobile | Catboy's Flying Fiasco | Gekko's Stay-at-Home Sneezes | Gekko Saves Christmas | Gekko's Nice Ice Plan | Gekko and the Mighty Moon Problem | Clumsy Catboy | Catboy and Gekko's Robot Rampage | Owlette's Feathered Friend | Owlette and the Battling Headquarters | Gekko and the Mayhem at the Museum | Catboy Takes Control | Owlette's Two Wrongs | Gekko Floats | Catboy's Two-Wheeled Wonder | Catboy's Great Gig | Owlette's New Move | Supersonic Owlette | Catboy and the Sticky Splat Slingshot | Owlette of a Kind | Beat the Drum, Catboy | Catboy Squared | Gekko's Super Gekko Sense | Owlette and the Owletteenies | Gekko's Blame Campaign | Owlette and the Moonflower | Slowpoke Gekko | Catboy and the Lunar Dome | Gekko and the Rock of All Power | Super-Sized Gekko | Take to the Skies, Owlette | Slow Down, Catboy! | Gekko's Special Rock |
| Moonfizzle Balls | Soccer Ninjalinos | Lionel-Saurus | Catboy's Cuddly | Night of the Cat | Catboy Does It Again | Terrible Two-Some | Owlette's Luna Trouble | Ninja Moths | Who's Got the Owl Power? | PJ Pinball | Bounce-a-Tron | Wacky Floats | Romeo's Disguise | PJ Robot | PJ Power Up | Moonstruck: Race to the Moon | Moonstruck: Lunar Fortress | Robot's Pet Cat | Gekko, Master of the Deep | May the Best Power Win | Moonbreaker | Race Up Mystery Mountain | The Mountain Prisoner | The Wolfy Kids | Wolf-O-Saurus | Catboy No More | Gekko Vs. the Splatcano | Meet Armadylan | Invisible Owlette | Wolfy Mountain | Romeo's Crystal Clear Plan | Nobody's Sidekick | Armadylan Menace | Power Pondweed | Owlette Comes Clean | Halloween Tricksters | The Wolfies Take HQ | The Good Wolfy | The Wolfy Plan | The Lizard Theft | PJ Dylan | Armadylan'd and Dangerous | Romeo's Action Toys | The Dragon Gong | Flight of the Ninja | Romeocoaster | Gekko and the Opposite Ray | PJ Masks Vs. Bad Guys United | Easter Wolfies | Luna and the Wolfies |
| Moon Madness | Armadylan and Robette Rule | Armadylan Zen | Way of the Woofy | Werejalinos | PJ Comet | Glowy Moths | Teacher Goes Ninja | Robot Goes Wrong | Lionel's Powers | Best Friends Forever | Meet An Yu | The Moon Prix | Pirates Ahoy! | The Secret of the Pagoda | Storm of the Ninja | Arma-Leader | Owlette Slips Up | The Splat Monster | Moth on the Moon | Fly Me To The Moon | Luna's Cosmic Tantrum | Motsuki The Best | Wheels of a Hero | Moonwolfy | Clash on Mystery Mountain | A Teeny Weeny Problem | Take Romeo Off The Road | Mission: PJ Seeker | Wolfy Powers | Do The Gekko | Armadylan, Action Hero | Super Muscles Show Off | The Prank Wheelz | Where's The Wolf Wheelz? | Villain of the Sky | Protector of the Sky | The PJ Masks Save Christmas | Romeo's Melody | PJ Robot Takes Control | PJ Sky Pirates | The Disappearing Ninjas | Gekko Everywhere | Gekko Takes Charge | Big Sister Motsuki | PJ Party Crasher | Master of the Moat | PJ Robot Vs Romeo |
| Heroes of the Sky | Who Let the Moths In? | Commander Meow | Motsuki's Missing Sister | Not so Ninja | PJ Party Mountain | Wolfies of the Pagoda | Master Fang's Secret | Aerodylan | Asteroid Accident | All About Asteroids | Romeo's Space Machine | Newton and the Ninjas | Missing Space Rock | Flying Factory Out of Control | Munki-gu | Munki-gu in the City | Mission Munki-gu | Legend of the Wolfy Bone | Gekko Vs Armavillain | Super Super Cat Speed | Munki-gu's Dragon | Gekko Loves Lionel | Octobella | Octo-Trouble | Star Buddies | To the Moon and Back | Magnet in the Moat | Motsuki Bugs Out | Octobella's Garden | Sploshy Splash | Teeny Weeny Returns | Robo-Wolf | The Labours of Armadylan | Lost in Space | The Power of Monkey Chatter | The Secret of Monkey Goodness | Pharaoh Boy | By My Pharaoh Feathers | Pharaoh's Chariot | PJ Robot Malfunction | The Mysterious Masks | Battle Of The Fangs | Catboy's Cat | Mad With Moon Power | Pharaoh and The Ninjalinos | Pharaoh's Boomerangs | Bubbles Of Badness |
| Ninja Power Up | Luna Goes Too Far | Owly Tricks | Newton The Destructor | Luna Kazoomer | Baddie Bots | Newton and the Animals | Octobella Strikes Again | Octobella on the Loose | Teeny Weeny to the Rescue | Invisible Munki-Gu | Orticia Blooms | Orticia and the Pumpkins | Pirate Robot | Owlette, the Pirate Queen | Catboy's Magic Trick | Gekko The Croc | The Camping Trip | Pondweed Party | A Percival Problem | Luna Girl's Sleepover | Dragon Dance | An Yu and the Cave Stones | Midnight Snack Attack | The Voyage of the Golden Asteroid | Carly and Cartoka | The PJ Riders | Flashcar in the Sky | Luna's Mega Moth | Captain Pirate Robot | Crash Track Trick | Gekko's Speedy Lizard | Night Ninja's School of Ninja Naughtiness | The Jolly Ninjalino |
To be announced.
| Super Cat Speed | Super Gekko Muscles | Owl Eyes | Reinvention | Moth's Day | Super Moves Dance Party | Super Gekko Camouflage | Teamwork | All Skills | Determination | Gekko Improvises | Super Singing Heroes | Team Night Ninja | Super Cat Ears | Owlette Improvises | A Job For All | Bravery | Catboy Improvises | Taking Turns | Training with the PJ Masks | Moon Rocked | Play Date on the Moon | Space Race | Cat-Car Chaos | Gekko-Mobile Mischief | Robots Wash Up | Owl-Glider Gliding | Armadylan Style | Wolfy Garden | Bye Bye Bad Luna | Catboy Power Up | Owlette Power Up | Gekko Power Up | Masters of the Mountain | Moon Cuddly | The PJ Rovers | PJ Racing | An Yu's Bird Rescue | PJ Masks Surprise | Ninjability | HQ Tour | Minding Motsuki | It's A PJ Masks Christmas | Learning the Planets |