The Brineys, Snowdens, and Alldredges are in various stages of seeking a sister wife. With the arrival of their third wife, the Brineys all move under one roof. After a breakup, the Snowdens begin their search, while the Alldredges seek their third.
The Snowdens and the Alldredges are both courting new sister-wives; the Winders live in southern Utah and keep their plural marriage secret, fearing persecution; the McGee family feels that they've been called to polygamy and are ready to search for a second wife.
Surprises are in store when Jeff tells his wives about Jennifer's abrupt exit; Dimitri decides to introduce Vanessa to Ashley's mom without telling her; and the McGees' video-chat with a potential sister-wife; Sophie Winder's family visits and tensions rise.
Vanessa experiences life as a Snowden during her visit; the McGees tell their sons that they want to seek a sister-wife again; the Winders go out in public as a trio for the first time; and the Alldredges wonder if their potential sister-wife Jennifer will show up for their date.
The Alldredges' potential sister-wife throws their courtship off-track while Vanessa throws a curveball at Dimitri on their date. The McGees move out of their camper for more space and privacy while the Winders take a public stand for their plural lifestyle.
Trying to move past their breakup with Roberta, the Merrifields dive back into dating. Nailah and Naeem reveal a big secret to Naeem's mother. The Davises navigate insecurities with their newest wife. The Sherwoods try an unusual approach to seeking.
The McGees set ground rules for courting and intimacy and ask a potential sister-wife to meet in person, while the Winders launch their online dating profile. Meanwhile, the Snowdens decide to make a move that could impact Vanessa's life in a serious way.