Perfection Moment

Not at all sliiiick.

When somebody is given all of the skill required to finish the Big Dramatic Finale because the person who was originally meant to do the job got sick. This new person can't screw up or else the Emotional Moment and Big Speech would have been all for nothing. Despite being shown failing almost all the time at what their task is, the understudy still pulls this one great big feat off and ends the story on a happy note. Perfection Moment is Plot Said So being played almost perfectly.