Okay so basically this guy named squidward goes to play the clarinet and he gets interrupted by SpongeBob and Patrick. He gets mad at them and basically tells them to stfu. Then some guy knocks on the door and is with the red mist and warns squidward (I think) about the red mist.
Next scene
Squidward is in a concert and everyone boos him. Everyone gets covered with the red mist in the concert, including squidward. Squidward then goes home in sadness. He gets more and more depressed and k wodrs himself

The end.