Linda Carlton receives a brand-new airplane from her father for her high school graduation. Linda is thrilled and immediately signs up for flight lessons. Linda had hoped that Ted Mackay would be her instructor, but Mr. Carlton forbids Linda from having anything to do with him. Mr. Carlton has had problems with Mackay's father and is certain that the son is bad as well. Ralph Clavering, a wealthy college student who likes Linda, also signs up for flight lessons. After completing their coursework, both of them are awarded their licenses. Linda and Ralph fly to Green Falls, where the young people are to spend their summer. During the journey, a valuable necklace that belongs to Ralph's sister is stolen. Due to circumstantial evidence, Ted Mackay is blamed for the theft, although Linda is certain that he is not responsible. Linda Carlton, Air Pilot Ralph is convinced that Ted Mackay is guilty, and Linda's friendship with Ralph is strained. Linda comes up with a plan to help Ted, and she departs on her plane with her best friend, Louise Haydock, in hopes of establishing a solid alibi for Ted Mackay.