Romeo invents a new mini-robot, which the PJ Masks quickly take a liking to. They bring him to their HQ and make him a member of their team, but soon learn this was all part of a plan by Romeo to lure them into a trap after seeing Romeo with a remote, so they must foil Romeo's plan.
Les Pyjamasques discover the new invention of Roméo: a very cute and cuddly mini-robot they quickly take affection. But this is a trap: Roméo waits for Les Pyjamasques to take the robot to remote control and destroy Q.G.
The following characters appeared in the episode "PJ Robot (episode)":