Ep 20. Party Horse

In the season 9 finale of Regular Show, titled "Party Horse," the gang is excited to attend a concert featuring their favorite band, Emotional Johnny. However, when they arrive at the venue, they discover that the lead singer has quit and the concert is cancelled. Despite their disappointment, they decide to throw their own party and invite Emotional Johnny's replacement, a party horse named Chance.

As the party heats up, the gang realizes that Chance is not just any ordinary party horse - he has the ability to grant wishes. Mordecai wishes for a cool mustache, Rigby wishes for a cool hat, and Benson wishes for a cool car. But when they start taking advantage of Chance's powers, they discover that every wish has a consequence.

As chaos ensues, the gang must figure out a way to stop Chance before he tears apart their world with his powerful wish-granting abilities. Along the way, they learn valuable lessons about responsibility and the importance of making the right choices.

With its trademark blend of humor and heart, "Party Horse" is a fitting end to Regular Show's nine-season run. Fans of the show will love seeing their favorite characters in action one last time, while newcomers will be drawn in by the show's irreverent style and quirky cast of characters. Whether you're a longtime fan or have never seen an episode before, "Party Horse" is a must-watch for anyone who loves clever animation and offbeat humor.