When Richard Hudson receives a pair of silk pajamas from a friend in China, he is unaware that they are bewitched and that whoever wears them will be transformed into someone else. Richard puts them on and is transformed into a fierce Chinese warrior, causing his butler Jenkins to quit drinking. The next night, Richard's close friend Jack Billings sends his brother Francis to spend the night, and upon donning the pajamas, Francis becomes Jack's sweetheart, Frances Kirkland, giving Richard a series of shocks. Next, Jack becomes a victim of the pajamas, is locked up as a burglar, and is given a black eye by his own father for "impersonating his son." Complications pile up until Colonel Kirkland, the friend who sent the pajamas, arrives from China and clears up the mystery.