The Curate of the boarding school is in love with the madcap, much to the displeasure of the principal. While the girls are out playing ball, Harry, the madcap’s real lover, climbs over the wall, and whistles to Rose, who makes a dive for the wall. The ball which is being thrown to her strikes the principal, knocking her to the ground. She is furious and throws the ball out of the picture, striking the curate who happens to be reading nearby. He picks up the ball, throws it and strikes Harry, who falls off the wall. In the meantime the principal has seen Harry on the wall, and Rose beneath it and goes after her, sending her back to the classroom. The girls all rush into the room. Rose tells them to close the door and hold it, while she draws the teacher’s picture. The principal takes her out and locks her in the cellar. The girls that night try to free Rose. She writes a note and throws it out of the window. It is found by the iceman, but not knowing how to read, he gives it to the Curate, who immediately sees that the note is for Harry. The Curate decides to save Rose and marry her himself. The girls play numerous pranks on the teacher, and finally secure her and drag her to the room where she has locked Rose in. They leave the teacher bound and gagged, while they continue with the party. When they hear the usual whistle, Rose rushes out of the room. She and Harry see the Curate climbing up the ladder to the room where Rose is supposed to be. They get the girls, who are all in pajamas, into an automobile and drive off for the wedding. The Curate, in the meantime, has taken the bride, whom he thinks is Rose, to the sheriff’s office. There he discovers it is the principal, and is about to be married, when Rose, Harry and all the girls, clad in pajamas, enter, and a double wedding takes place.