Four kids slip through a hole in time when they discover a hidden mine shaft that transports them to the old Wild West. Their magical journey takes them to a place where they encounter thieving bandits, pandemonium and adventure in their pursuit of lost gold. What the youngsters don't know is that their Principal is trying to capture the lost treasure first. Now the gang has to stick together to find the hidden gold before their evil Principal locates the loot for himself! Adventure has a new Posse!