Legends of Frontierland is a new interactive guest experience at Disneyland this summer. From the information pamphlet:
"You are invited to play an immersive game in which you can create your own persona and frontier story. Start out as a friend of Frontierland or Rainbow Ridge and work your way up to become a legend."
As it was explained to us, the citizens of Rainbow Ridge are down on their luck - the gold mines are played out and their water has dried up. They've now got their eyes on the more prosperous Frontierland, and are trying to take it over, and the folk of Frontierland are trying to prevent that.