Bradley, Brian, Nate, and Lucy are dressing up and getting incredibly excited for a massive, fun New Year's Eve party with all their friends. They are ready to throw colorful confetti, blow loud noisemakers, and stay up very late to welcome the brand new year together. But as the clock slowly ticks closer and closer to midnight, the friends start finding strange, hidden clues scattered all around the celebration room. It quickly becomes clear that a sneaky, mysterious guest has planned a huge surprise, and there is a real, complicated mystery to solve before the year officially ends. Put on your party hat and join the four kids as they race frantically around the festive room collecting important evidence. You will need to think fast and crack the tricky hidden codes before the final midnight countdown finishes and the new year begins.