It's Only a Play is set on the opening night of Peter Austin's new play, as he anxiously awaits to see if his show is a hit. With his career on the line, he shares his big First Night with his best friend, a television star, his fledgling producer, his erratic leading lady, his wunderkind director, an infamous drama critic, and a wide-eyed coat check attendant on his first night in Manhattan. There's no business like show business.