Petra appears to have no interest in motherhood. Xo invites Alba's ex-boyfriend to visit. Jane is frustrated with not being able to contact her father, Rogelio, who was kidnapped by Lola.
After getting back together, Jane regrets having left Michael. Petra is concerned when Rafael seems to return to his playboy ways. Rogelio's new assistant turns out to be his stalker. Petra has twins.
When the team stumble on a murder victim while out on patrol with the Las Vegas police's mobile crime unit, the suspects include several street criminals whom they have already arrested. The case becomes personal for Brass when it turns up some information on his daughter.
Jane's bachelorette party doesn't go her way. Michael's future father-in-law tries to plan the perfect bachelor party. Rafael tries to figure out his half-brother's motives.
Jane looks forward to a Mother's Day tradition with the Villanueva women until Petra changes plans. A mysterious ad in a college newspaper puts Jane's TA position in jeopardy.