Amaya está entusiasmada con dar un paseo en el tren veloz, pero este desaparece. Luna Girl envía nubes tormentosas para bloquear el sol.

Los libros en el salón de clase están llenos de fotos de Romeo. Amaya nota una misteriosa grieta en una pared del museo.

El día deportivo queda cancelado por la misteriosa desaparición del equipo. En el museo, alguien se llevó el modelo del pterodáctilo.

El equipo va al parque y lo encuentra encogido. Un misterioso balón lunar está succionando todos los juguetes.

Las decoraciones desaparecen en vísperas de Navidad; toda la ciudad está cubierta de hielo... en medio del verano.

Durante una visita al zoológico, el equipo descubre la ausencia de las mariposas; Ululette convierte la búsqueda de Luna Girl en un concurso.

Un misterioso dispositivo hace que Greg pierda la voz; el equipo entra en acción cuando se roban la espada del héroe de Connor, el maestro Fang.

Catboy debe rescatar a Ululette y a Gecko de las garras de Romeo. Alguien robó unos preciados elementos didácticos del aula.

El pastel de cumpleaños de Greg desaparece, y las pruebas apuntan al Ninja Nocturno. Un espectáculo se cancela cuando las marionetas desaparecen misteriosamente.

Los héroes buscan un autobús que desapareció; aparece destruido el escritorio de Connor en la escuela y la única pista son unas pequeñas huellas.

Roban el micrófono de un famoso cantante durante un concierto; Romeo tiene una nueva arma que pudre los huevos.

Connor recibe una motocicleta de parte de una tía abuela. Gecko se ofrece a ayudar al equipo a encontrar un libro de cómics perdido a pesar de que no para de estornudar.

Un viaje escolar al observatorio se cancela cuando el telescopio gigante desaparece; en la escuela, hay una epidemia de torpeza.

Catboy y Gecko dejan a Ululette fuera del plan para recuperar los materiales del parque. Descubren a Luna Girl robando en el museo.

Ninja Nocturno construye una fortaleza con autobuses escolares cerca del cuartel de los Héroes en Pijamas. El equipo investiga un incidente en el museo de ciencia.

Romeo construye un supercontrol remoto que maneja a todos a la vez; Amaya se pone furiosa cuando se rompe su estatua de Flossy Flash.

El cuartel parece estar flotando y nadie sabe bien por qué. Luego, se esfuman los vehículos de los Héroes en Pijamas, por lo que tienen que salvar al mundo en sus bicis.

El concierto escolar corre grave peligro tras la desaparición de todos los instrumentos. Romeo idea un poderoso plan para adueñarse del mundo.

Romeo utiliza su nuevo dispositivo teletransportador para apoderarse del cuartel de los Héroes en Pijamas. El Ninja Nocturno empapela la ciudad con afiches de sí mismo.

Romeo utiliza un copiador de poderes para robarle a Ululette sus habilidades especiales. El Ninja Nocturno hace desaparecer el tambor de Connor justo antes de un desfile.

¡La máquina multiplicadora de Romeo es capaz de hacer copias idénticas de cosas y personas! El equipo no puede creer que haya una bandera de Ninja Nocturno en la base.

Una excursión escolar al museo se cancela debido a la desaparición de un carro dorado de la exposición. Nadie sabe dónde está el auto que Cameron le prestó a Greg.

Luna Girl roba las herramientas de jardinería de la escuela. Nuestros héroes entran en acción cuando notan que todos los habitantes de la ciudad caminan muy lentamente.

Luna invita a los chicos a una fiesta cerca del cuartel general. Ninja Nocturno llega a la ciudad en una roca misteriosa.

Mientras juega con los inventos de Romeo, Gecko accidentalmente se agranda a sí mismo. Un show aéreo se cancela cuando descubren que desaparecieron los aviones.

The playground equipment was stolen by Robot because Romeo made a new robot called Robette. Robot was jealous.

A bird invades the HQ. Luna Girl reveals she is going to turn HQ into a giant Luna Magnet.

PJ Masks see Ninjalinos stealing school buses. Night Ninja makes his HQ out of the stolen school buses.

Romeo wants to take over the town with his latest invention - the 'Big Box of Bad'.

Romeo steals the inside of the PJ Masks remote control helicopter for his new remote to control people.

The PJ Masks work to stop Nigh Ninja from destroying the museum.

Romeo uses his Anti-Gravity Maching to try to send the HQ to the moon.

Romeo steals cars and the PJ Masks Super-Vehicles.

Night Ninja steals the school's instruments. He wants to use them for his own concert.

Romeo wants to take over the world by using his three machines: his Robot, his La-Boggan and his Track-A-Whacker.

Romeo broke into HQ. He says he needs to know how to bring up the PJ Picture Player "in peace", so he teleported the PJ Masks outside of HQ.

The PJ Masks find out that Night Ninja is doing his biggest, baddest night-time villain move ever: the Sticky Splat Slingshot. Catboy, however, wants the mission to be his biggest save yet.

Romeo steals Owlette's powers and turns himself, Catboy and Gekko into fliers.

Night Ninja plans to turn Catboy's daytime parade into the Night Ninja Parade Spectacular.

When Greg doesn't take care of Cameron's mini-car, it goes missing!

Night Ninja challenges the PJ Masks to a game of Capture the Flag with the PJ Mask headquarters as the prize.

Romeo's multiplying machine accidentally makes Catboy copies.

By day, Connor and Amaya were at the Cafe, then Greg showed up, telling Connor and Amaya about the car Cameron let him borrow for the day.

By day, the trio are working on sunflowers for the sunflower competition. Connor and Greg notice that Amaya's flower isn't so healthy, and they give her advice.

In the day, the trio discovers slow moving people and animals. As the PJ Masks, they discover that Romeo invented a slow motion ray so everyone will be too slow to stop him from conquering the world. But Gekko keeps getting distracted, causing him to be hit by the slow motion ray. He comes up with a plan for Catboy and Owlette to distract Romeo, while he slowly makes his way to destroy the slow motion machine.

At day, Connor is trying a new dance move called The Tornado except he messed up and ended up being laughed by the kids. Then, while Connor, Amaya, and Greg are walking back to their school, one of Luna Girl's moths gave the kids an invitation to her party, but they soon become suspicious of her plan and the trio transforms later at night. Luna Girl appears with the speakers and streamers for the party. She states that the PJ masks aren't really guests, but they are victims of her Lunar Dome, and traps them. Luckily, the dome doesn't cover the whole HQ since it's only in a half circle so the PJ masks suggest that digging underground is the only way out. Unfortunately, an embarrassed Catboy thinks of other ideas despite Owlette and Gekko telling him that the Super Tornado is the only key to escaping the dome. When Greg, Connor and Amaya were in the library reading books, Greg found a book about the strongest athletes in the world that won many medals and trophies.

Greg wondered if he could win at least one medal to declare him being strong. By the time they went out of the library, they saw lamposts being bent. By night, they saw Night Ninja chasing a rock called the Rock of All Power. Amaya heard about the rock in her Kung Fu book that whoever breaks the rock will be awarded with a medal. Gekko was so tempted to break the rock to get the medal since he has the power of strength instead of protecting his friends and their HQ. But while he tries to stop the rock, he breaks it, not meaning to. He says that he felt stronger than ever, and that true strength comes from caring for your friends. That is the best strength.

Luna Girl steals parade floats!

The three friends are excited for the loop-the-loop airplane show, but two adults tell them it's been cancelled because the planes were stolen.

Connor, Greg, and Amaya are preparing for a school race, but the trophy was stolen. In the night, they find out Night Ninja took the trophy. He proposes a race between himself and Catboy, with Luna Girl as the referee. What she really wants is the trophy for herself. Catboy keeps messing up because he kept going to fast in each competition. Owlette and Gekko try to convince him to take his time, as slow and steady wins the race. Finally, he comes up with a plan and offers one last race with the two villains. This time he slows down and wins the race, with the other two competetants losing. The PJ Masks return the trophy to where it belonged.

Greg accidentally leaves his rock at the museum. He and his friends go back to get it, only to discover all the magnetic rocks are gone. By night, they find that Luna Girl stole the rocks for her Luna magnet to pick up bigger things, like vehicles. She uses them to try and destroy things, including the PJ Masks. But instead of trying to get the mission done, Gekko tries to go after his rock, and that causes the heroes to struggle to get the mission to a success. His friends tell him that's it's not important like the mission is, and he sacrifices his rock to stop Luna Girl.