You know, an engine release button was not one of Numbuh Two's brightest ideas.
Numbuh 6934 is an unfortunate S.C.A.M.P.E.R. pilot who was steering toward the Darklands when GIR hit the engine release button in the cabin. The S.C.A.M.P.E.R. crashed into Forbidden Island ; though Numbuh 6934 was able to land without any loss of life, she and GIR are now stranded on the large island which is the only land there without any means of repairing the damaged vehicle or leaving the area.