Thomas's birthday is coming up. He's panicking at the idea of ​​having his first party, especially since everyone is ready to give their opinion. Thomas has decided to invite Ally to his party through Julia so as not to be refused. But before doing so, he has a strange dream where he can no longer transform into a girl and where his female double has become independent to lead her own life. Thomas finally feels free, but this Julia blames him for what he did to her when she was his double and is determined to get revenge for past humiliations. When she proves capable of transforming into Thomas, the dream turns into a nightmare! Two Thomases begin to haunt the schools in the hallway. What if Julia took advantage of this power to steal Thomas's birthday party? What a relief when he wakes up to discover that it was all just a dream! But maybe Thomas will now think twice before using his double indiscriminately.