'Rattlesnake' Jake Dawson finds himself in the hills above a dusty desert town called Old Sierra, staring at a cheap-looking treasure map that he won in a game of poker. The map is clearly a fake—a copy of a copy, at the very least—but he's got nothing to lose, so he’s set off to see what lies at the end of the trail. It's just Jake, his horse, his trusty six-shooter—and this nagging feeling that someone is following him.

Old Sierra was a boomtown a few years back, built up during the Gold Rush and all but deserted in its aftermath. Some folks still believe that there's gold up in the hills, but most say the area ran dry a decade ago. There's even an abandoned gold mine just outside of town, but it's been locked up and avoided for years—most of the town says it’s haunted.

Of course, everyone's got a story to tell about the weird happenings around Old Sierra, what with the Indian ghost stories about the Sacred Valley, and the weird hermit who's lived in the hills for longer than anyone can remember. And with a gang of bandits on the outskirts and a crooked sheriff running honest folks out of town, Old Sierra’s sure seen better days...

Jake stands at an overlook near a cave entrance. A trail leads winds off-screen from the overlook before returning near the outskirts of town. There's a second cave hole looming high above, but he can't reach it—yet. And not too far away is the blocked entrance to the abandoned mine. Does his map lead him to some kind of secret backdoor into the mine?