The Adventure of the Cheerful Four both the puppets of Jonathan Small and Arthur Morstan have the atmosphere of the members of a famous British musical band. One night Arthur Morstan, a pupil of Archer House is attacked and gets injured. His younger sister Mary Morstan requests Sherlock Holmes to solve why his brother is attacked while John H. Watson falls in love with her. They began searching Arthur's room with the help of Abdullah, roommate of Arthur. Holmes suspects that the offeder stole into the room from skylight and he and Mary find small handprints around it on the roof. Watson tries to get up
Marry Me, Mary! still loves him. Because she can't afford college tuition, she temporarily stops attending college, and without any special skills, starts to work odd jobs. One day, driving friends around as one of those jobs, she accidentally hits musician Kang Mu-gyul (Jang Keun-suk) and over a series of events, they become friends. Mae-ri's father proposes that she marry his rich friend's son Byun Jung-in (Kim Jae-wook) to pay off their debts. She refuses; when her father won't let her, and in fact forges the couple's signatures on a marriage registration, she pretends to have already married Mu-gyul. Instead of accepting that,