Sherlock, Jr.

A movie theater projectionist and janitor (Buster Keaton) is in love with a beautiful girl (Kathryn McGuire). However, he has a rival, the "local sheik" (Ward Crane). Neither has much money. The projectionist buys a $1 box of chocolates, all he can afford, and changes the price to $4 before giving it and a ring to her. The sheik steals and pawns the girl's father's pocket watch for $4. With the money, he buys a $3 box of chocolates for the girl. When the father notices his watch is missing, the sheik slips the pawn ticket into the projectionist's pocket unnoticed. The projectionist, studying to be a detective, offers to solve the crime, but when the pawn ticket is found in his pocket, he is banished from the girl's home.