Do you dare to enter the Hidden Side? Download the LEGO Hidden Side app and point your phone at the train to make it come alive. Interacting with the model in the real world makes things happen in the app. See for yourself! Explore the ever-changing Hidden Side, solve new mysteries, find cool items, catch and collect ghosts, and defeat the boss ghost, The Bawa – if you dare. Can you stop the ghosts in time? Join forces with heroes Jack Davids and Parker Jackson as they use the latest ghost-hunting tech created by J.B. to defeat the ghosts. Or play out your own ghost-hunting adventures with this awesome LEGO brick building set! The LEGO 70424 Hidden Side Ghost Train Express includes 697 pieces. Ages 8 and up.