The series is based on the Les Pyjamasques book series by Romuald Racioppo. On April 19, , the first episode of the third season was aired. The start of the fourth season was announced to air in April Season 4 is still in development, but may also be available on the service after it has aired its last episode. Greg, Connor, and Amaya become the fictional superhero team PJ Masks when night falls in order to fight enemies and rivals such as Romeo, Luna Girl and Night Ninja to keep them from ruining people's day. Greg becomes Gekko a gekko , Connor becomes Catboy a cat , and Amaya becomes Owlette an owl and together, they never lose and always save the day.