The Weston family has just arrived at a lonely ranch outside of Tucson, where mom, Sharon, is leaving Jesse, her 16-year-old son, and Britt, her 14-year-old daughter with her brother while she weans herself from a painkiller addiction in a nearby center. Jesse, in particular, has had it with Sharon as they family argues (Demo 1: Gotta Believe It). After a blow-up, Sharon tries to reassure everyone that she will get the family back on track. Her brother takes her to rehab as Jesse wanders off, disappointed at the desert-like ranch. He finds an empty bunkhouse and Britt stumbles into it as well. Britt finds a giant Old West toy set. She and Jesse argue about how the world of the Wild West toy set should be set up (Demo 2: Cool Place to Be).
With a leather band that her uncle gave her, Britt touches a figurine of Buffalo Bill and he magically appears. Bill convinces Jesse to be a part of his world. (Demo 3: Write Your Story). Although Jesse is skeptical about the power of the band, he brings to life a young Indian girl, Crazy Pony, who is being forced to marry against her wishes. She and Jesse have a common bond -- no one understands them. (Demo 4: Find Your Way).
Bill is starting to wonder what the hell is going on, so Britt brings to life General Custer (Demo 5: There's No USA Without US) and, later, Geronimo. The rivalry between the Cowboys and Indians is heating so Jesse and Britt concoct a plan (Demo 6: Keep the Peace). For a moment, all is quite when Sharon appears, having left rehab. She is almost convinced to return when Geronimo re-appears and Sharon follows him, remembering when she had a similar experience with the toys as a child. Britt begs Jesse to help him talk to Sharon, but he's done with her. And, then, Britt has had enough, too (Demo 7: Cracked and Broken). Angrily, she brings all the toy pieces to life to create havoc. Pow! Black out!
Jesse awakes in the arms of Crazy Pony. He has been injured in a melee. He just wants to take Crazy Pony and run away. She has an idea (Demo 8: The Legend). Before they can get out the door (Demo 9: Unite and Destroy), they are confronted by all-out warfare with Britt having joined the Cowboys (Bill & Custer) and Sharon siding with the Indians (Geronimo). Jesse tries to first reason with Sharon who is content in her fantasy world (Demo 10: So Simple) and tries, unsuccessfully to reason with Britt and Bill (Demo 11: They're Not Doing It Right).
Jesse is lost, can't find Crazy Pony and is about to give up hope when he runs into Calamity Jane (Demo 12; No Where is No Where). He realizes that the Westons future now lies with him and vows to fight back (Demo 13: Belong Again). Finally, he creates a truce among his family members, and reaching a peaceful situation magically transports the Old West characters back to the toy set (Demo 14: We Could Do Better). Finally, Britt and Jesse have a happy moment (Demo 15: Brother to Sis).