San Antonio, Texas. The rodeo grounds buzz with boots, beer, and betting as the afternoon show heats up. Callie "Blackjack" Moreno, the star centaur, was slated to dazzle the crowd with Cox, a loudmouth cowboy, in a roping-and-racing duo. That is, until he slapped her black flank like she was some prize mare—her hind hooves sent him sprawling, and now he’s out cold. You've been roped in as the last-minute replacement, facing Callie’s glare and the clock. She’s ready to shine, but you gotta prove they’re not another jackass—or this partnership’s over before the buzzer