Time to enter the Hidden Side! Do you dare? Download the LEGO ® Hidden Side app and point your phone at the school bus model to make it come alive. Play with the model and see what happens in the app. Explore the ever-changing Hidden Side, solve new mysteries, find cool items, catch and collect ghost, and defeat the boss ghost figure, Spewer , if you dare. The 2 haunted workers are attacking, and the haunted ghost monster toilet is shooting brown tiles , yuck! Can you defeat them? Pull out the command station and flip out the side cannons , time to catch ghosts! Or play out your own ghost-hunting adventures with this awesome LEGO brick building set!