Night Ninja, the Ninjalinos, and Teeny Weeny are in the bamboo forest of Mystery Mountain. Night Ninja proclaims that they are going into the pagoda to obtain ultimate ninjability. The Ninjalinos are not excited about this, though, knowing that they are already great ninjas, and ask him if he even knows what the ability is.
As the ninjas run up the mountain, Night Ninja explains that the power of ultimate ninjability is the power to be the ultimate ninja. They will gain ultimate strength, develop ninja stealth and craftiness, and most importantly, defeat the PJ Masks for good. The Ninjalinos try demonstrating all those things to Night Ninja, such as stacking on top of each other and disappearing into the rocks, but he thinks that they are just fooling around, not even acknowledging what they are trying to do.
The ninjas reach the pagoda gates. Before they could go through, the Ninjalinos are pointing at something, as if to indicate someone else is also at the top of the mountain. Night Ninja ignores the warning, though, and he leads the exasperated Ninjalinos into the pagoda area to work on getting ultimate ninjability.
What the villain doesn’t realize is that the source the Ninjalinos were pointing at was actually the PJ Masks themselves. Catboy comments that the Ninjalinos are ninja-y, and the team laughs.
Don't try to become something that you already are.