Finding Nemo is a licensed game that is based on the animated Pixar movie of the same name. It generally follows the plot of the movie beat for beat with certain scenes turned into much longer levels for the sake of the game. Unlike the GameCube and PlayStation 2 versions of the game, you unfortunately do not get to play as Dory.
While it may not look like much of an improvement when compared to the previous run, this TAS from Odongdong and Alyosha actually saves nearly 20 seconds of game time when taking the boot screen and emulation differences into account. This is thanks to the usage of new strategies that have been discovered by real-time speedrunners ever since the previous TAS was last published.
You can watch this run being played back on a real console here.