Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this world prizes. First, they must decide whether objects will float or sink in a water tank. Then, in a game based on light and shadows, the young scientists have to figure out what their team captains are holding by observing their shadows behind a huge screen. Finally, the teams learn about structures by building arched bridges they can step across to reach an island.

Meanwhile, Sam and Ayo are competing to see who can make the best model rocket. The scientist who loses must clean the other’s dirty lab beakers for a week! Who will triumph? Show less