Former Buffalo Soldier Mo Washington travels West to lay claim on a gold mine. After her stagecoach is ambushed, Mo is tasked with holding a dangerous outlaw captive and must survive the day when the bandit's gang tries to free him.
Nobody in the precinct likes the new captain, Wunsch continues to humiliate Holt as he takes his new job in Public Relations, and Jake and Amy try to figure out what to do next after their kiss.