At St. Claire Elementary, Mako, Miko, and Mutsuko stumble upon Kunstrijk, a human anatomy model, and Goth, a skeleton, in the school's eerie science room. Angered by the girls' actions, Kunstrijk plots a spooky midnight party to terrify them. In a bid to redeem themselves and rescue the science room from demolition, the trio embarks on a quest with Kunstrijk and Goth to retrieve three fabled medals capable of granting wishes.