Imagination, craftsmanship and execution come together in the final challenge of the season! Host Will Arnett, and Brickmasters Amy Corbett and Jamie Berard give the three remaining teams 24 hours to design and construct a "master" build! Duos are given the freedom to build anything their minds can envision. The twist is that the build needs to have two looks: a day look and a night look. Whatever is crafted should present itself one way when the lights are on and should surprise the judges when the lights go off. Find out who will take home the $100,000 prize, the LEGO trophy and the illustrious title of LEGO MASTERS.