The short opens up outside PJ Masks Headquarters, where a huge statue of Night Ninja is standing on the other side of the moat. Presumably, Night Ninja has come to HQ to take it down and replace it with his statue. Fortunately, Catboy is there, and with PJ Robot with him to cheer him on, he is ready to take on the villain with his power: Super Cat Stripes.
However, the first couple of attempts to defeat Night Ninja with his power don't go so well. As he fires his Super Cat Stripes, he gets pulled off and tangled into different places; first up a tree, and then up a lamppost. PJ Robot and especially Night Ninja get annoyed at this, even though the villain found it amusing at first.
After the third attempt to use his power sends Catboy flying up to the wing portion of headquarters, PJ Robot suggests that Catboy create a tightrope. Catboy complies, and he successfully shoots his Super Cat Stripes towards Night Ninja's statue and tightens it around both the statue and HQ's wing structure. Night Ninja gets ready to face him off, but Catboy swings down and successfully fires two more Super Cat Stripes; one to wrap up Night Ninja, and one to tie him to his statue.
Night Ninja is defeated, and PJ Robot happily applauds on Catboy's victory. Catboy continues to swing on the tightrope to celebrate, until he ends up in the water. As PJ Robot rushes out to help him, he comments on how cats really don't like water, and the short ends.