Six teenagers from the Bronx set out to explore a cave in their neighborhood. The cave exploration is a washout but after falling down a ledge the six find that they have time-travelled three centuries into the future. Fortunately, they are accepted by the tribe living there. However, the tribe is fighting another tribe from Manhattan. These teenagers have a unique advantage in this conflict. They know the land. For the six, this becomes a true adventure. Yet, all too soon their adventure becomes very real. Friends and enemies are getting killed! This was no longer fun. This was war!