Though an emerging research area, serial argumentation has yet to be cohesively explored from a theoretical lens. The current project thus extends and updates Trapp and Hoff's (1985) original serial argument model by explicating and testing a theoretical process an individual goes through immediately before, during, and after a serial argument episode. Specifically, perceived resolvability, serial argument goal importance, conflict tactics, rumination, and motivation to achieve goals are examined across romantic and family relationships in the serial argument process model. The proposed paths emerged generally as predicted and the model fit the data. The serial argument process model thus allows for a preliminary theoretical depiction of a serial argument episode enacted in a variety of close relationship contexts.