Simon is a backstage cat. He rides with his "leading lady" to the theater for every performance. The leading lady goes out on the stage to act and sing. Simon always stays in her dressing room, until...one day Simon runs backstage and onto the stage. The play is supposed to start, but Simon is high above the scenery.
The stagehands and the musicians try to get Simon to come down. But Simon does not want to go back to the dressing room. Will the show go on? Is it Simon's turn to be a star.