Ellie (Peyton List) and Jack (Jacob Bertrand) are two ordinary middle school students who have the same troubles and complaints as most of their peers. By chance, they met in the school's infirmary. Through mobile phone text messages, the two became good friends who could talk about anything. They shared every bit of their lives through text messages. As time went by, their mobile phones actually produced magic because they carried too much emotion. Ellie and Jack have always envied each other's lives. The magic of the mobile phone allowed them to realize their dream, which is to exchange bodies. In this way, Ellie and Jack finally got the opportunity to experience the beautiful life of each other in their imagination. After the initial freshness passed, the troubles that needed to be solved came one after another.