Howleen, after loosing a bet, goes up to the Monster High attic and finds an old lantern. The lantern possesses Gigi and Howleen finds out that she can get not on 3 wishes, but 13 Wishes!. Howleen is buzzing now, and she wants to start helping her friends to get their wishes as soon as possible. But things do not turn out as expected, and for every wish that is made true, something really bad happens to the school. This bad things happening are affecting students and Howleen feels responsible about what is happening. She decides to find a remedy for the whole situation, with the help from her friends, before things get any worst.