In this early short Harold Lloyd sneaks into a movie studio in order to locate an attractive young lady he's just met at a snack bar. He's retrieved a letter she dropped and wants to return it to her, but it's pretty clear that his interest extends beyond mere politeness. (She's the adorable young Bebe Daniels, so this is easy to understand.) The movie studio setting provides Harold with lots of opportunities to do what comedians do in comedies like this one: flirt with actresses, anger the studio brass, and dash through sets disrupting everything.

Frivolous young Mrs. Pensonby Smythe, trapped in a loveless marriage, secretly accompanies the loutish "Billie" Carrington to "The House of the Mask," a notorious gambling palace where the rich play in secret with masked faces. While there Carrington attacks her and she is rescued by gambler Belmont Blair who recognizes her. In the ensuing scuffle Carrington is accidentally killed. Blair gets Mrs. Smythe out of the house before the body is discovered. In time Blair, who loves Mrs. Pensonby Smythe’s sister Grace, sacrifices himself to protect them both.