When word gets out that Redstone Junior High is a hot spot for hostile mobs, enrollment goes up and chaos is the new normal. To get away from all the stress, Pixel, Sky, Uma, and Violet find themselves sneaking off through a secret mine tunnel to a beach-filled paradise they discovered. Little do they know that they are trespassing on the territory of two very angry witches: Grindel and Agatha. The witches watch them from the shadows and vow to reclaim their beach by any means necessary. What starts out as mischievous tricks and upside-down spells escalates to a vengeful plan to take over the entire school.