When Frankie Stein and her friends found a machine to go back 200 years, to the first day in the history of Monster High, they did not imagine what would happen. A lab accident fuses some ghouls into four new monsters and they’ll become new college students and friends of Frankie. They are: Avea Trotter, she is a centaur bird with leading character. Bonita Femur is skeleton moth and is very nervous. Sirena Von Boo is a ghost siren, a free spirit; she’s a little distracted; and Neighthan Rot, he is a zombie unicorn a little awkward. Now Frankie and friends have to stop the experiment and trying to fix their failed experiment.