1x4 - LEGO Frozen Northern Lights

Anna, Elsa and Kristoff finally make it to the top of the Great Glacier where they find Grand Pabbie and learn the cause behind the missing Northern Lights. Can Grand Pabbie restore the lights to the sky so they may relive their happy childhood memories? And will Olaf finally have a chance to try something worth melting for: his first mug of hot chocolate?