The LEGO Crystal Sweeper set is part of the LEGO Power Miners series, which is cantered on an alien world where mining specialists investigate earthquakes. That investigation leads them to a confrontation with the LEGO Rock Monsters and their LEGO Crystal King. The LEGO Power Miner Crystal Sweeper set includes a Dr. Brains, Rex, Meltrox, and Glaciator mini-figurine. This kit allows users to utilize the working harvester wheel to collect crystals and transfer them to the bucket attached to the rear of the vehicle. A movable side-mounted drilling arm can be used to drill through rock while the included motorcycle comes in handy for rescuing miners from the monsters' catapult.