Festus's beautiful young cousin, whom he has not seen since she was a little one, arrives in Dodge to keep the pact her father made for her when she was a baby: to marry Festus. 

Festus finds a little girl out on the prairie. He learns she saw her mother get killed by a stranger. When he takes her to Dodge, Matt hears she was hiding when this happened but can identify this man who may already be in town.