Money certainly doesn't grow on trees but what would you do if ceased to exist? In episode 2 of Wall & Broadcast, we look inside a state penitentiary where the use of US currency is forbidden but a secret economic system has taken hold. And we visit a country where the official currency has failed to see how people respond when the money they've come to rely on becomes worthless. In the process we discover that, in addition to love, there is one thing that money still can't buy...