Join Lisa and Liam on an unforgettable adventure at the National History Museum, where they explore fascinating exhibits from dinosaurs to space rocks. When a precious meteorite goes missing, the duo springs into action, following chalky footprints to solve the mystery and save history. With the help of their caring guide, Mrs. Thomson, they discover teamwork and bravery, earning shiny badges as Junior Museum Helpers before stepping out into the warm afternoon, ready for their next adventure.