This is a Longplay of the Story Mode of Mario Party 9 called Solo.
I play through everything as perfectly as I can.
I use Koopa in this Walkthrough, because he is newcomer in Mario Party 9.

Mario Party 9 (2012)
Nintendo Wii
Playing through Story Mode with Koopa collecting over 500 Mini Stars and thereby achieving the Mini Star Ranking "True Superstar".
16:9 Aspect Ratio True Widescreen
8K (UHD) [7680p x 4308p] 60fps

Timestamps
Solo
0:00:58 Intro
0:02:07 Beginning

0:02:07 Toad Road
0:34:15 Bobomb Factory
1:15:40 Boo's Horror Castle
1:56:13 Blooper Beach
2:36:35 Magma Mine
3:19:02 Bowser Station

3:49:08 Bowser's Block Battle

3:56:34 Outro
3:57:57 Mini Star Ranking
3:59:37 Credits

Extra Timestamps are in the Comment Section!