In book 2 of the Mighty Meg series, Meg must save her school from a frozen phenomenon! Strange things are happening in Plainview! When Meg sees a wall of ice holding back a mountain of stones, she knows once the warm, spring weather comes and melts the ice, the stones are going to come crashing down. It's up to Mighty Meg to save the day! But can Meg stop the avalanche while still keeping her super secret?