Marty puts Scootermami's wheel back in place. Then he takes the nut they found, screws it on, and tightens it firmly with a wrench.
Scootermami carefully leans on her wheel while Scooterpapi helps her. They calm down quickly, because the wheel is stable in its place. It won't come off anytime soon.
Scootermami and Scooterpapi are very grateful.
"Marty, we would like to take you and Blankie on a really special trip. Choose!"