While visiting the Griffins, Brian's gay cousin Jasper announces he's engaged to his partner and wants to be married in their home. But when Mayor West bans gay marriage in Quahog to cover up an unrelated scandal, Brian becomes a crazed activist and resorts to hostile ways to change the mayor's decision. Meanwhile, Lois questions her view toward gay marriage and Chris joins the extremist "Young Republicans" group to win a girl's heart.