Movieclip and a Button issue

Hello guys,

I just have some few questions about Buttons and MovieClips using AS3.

Intro and outro of a movieclips using buttons.

Like for example

I have two buttons named buttonOne and buttonTwo. When I click buttonOne, the movie clip named oneMc should play its intro and then stop then after that whenever I click buttonTwo, the movieclip oneMc should play outro animation and then movieclip twoMc intro comes in.

What is the general idea for this one?

Do I need to use the Loader and URLRequest for this one?

Also, how can I call the movieclip to play its outro and play the next movieclip’s intro?

Thanks!