Monster High: Adventures of the Ghoul Squad S01E03 - Tale of Two Mountains

In an effort to save Gil's island, the ghouls travel to an icy mountain range to find a ghoul with ice powers that can stop the immanent volcanic eruption. The ghouls split up to search two different mountains until they locate Abby Bominable and recruit her to save the day. They return to Gil's island and Abby stops the volcano from erupting.