Jane and Michael are back together and Jane wishes she had never left Michael in the first place. Rafael appears to have regressed to his playboy ways and Petra is concerned about him. But Petra is not aware that Rafael is helping Michael find Mutter's other son, Derek. Rogelio's new assistant, Paolo, is actually his stalker Lola. Finally, Petra gives birth to the twins.

Rafael and Petra are new parents but Petra is already back to work and appears to be not interested in motherhood. Xo has invited Alba's old flame Pablo to visit. This does not sit well with Alba as she believes Pablo is cursed and will bring bad luck. Jane is growing concerned that she can't get in touch with her father, Rogelio, who is being held captive by Lola.

Jane and Michael's wedding plans are side tracked when the Villanueva house is ruined by a flood. Jane is looking to have a small wedding, but Rogelio wants nothing more than to throw Jane a big blow out wedding so he can invite all his celebrity friends. Jane and Michael are also looking for the perfect home to move into and when they find a place 45 minutes away, Rafael has an issue being that far from Mateo. Petra is still having trouble adjusting to motherhood.

Jane has a specific idea of how she wants to celebrate her bachelorette party, but when Xo and Lina get involved, nothing goes as planned. Michael wants to enjoy a night out with his friends, but things get awkward when his future father-in-law, Rogelio, tries to plan the perfect bachelor party. Rafael is still trying to figure out what his half-brother Derek motives are and what he knows about their mother. Meanwhile, Petra gets a surprise of a lifetime.

Jane takes on additional shifts at the Marbella to make some extra money, but it starts cutting into her time with Mateo. Jane and Rafael agree that they need a formal custody agreement and decide to use a mediator to help make it more amicable. Xo takes an acting role on Rogelio's telenovela and they are both surprised with her performance. Michael gets called into his boss' office after a newspaper runs a story on him and Sin Rostro. Meanwhile, Petra confronts Rafael when she learns that the twins' trust fund is different from Jane's arrangement.

The Villanueva women have a tradition for Mother's Day and Jane is excited to get to participate in her first one as a mom. However, their plans are thwarted when Petra invites everyone to a brunch instead. Jane's TA position is put into jeopardy when a mysterious ad appears in the college newspaper. Rogelio is hurt when Dina doesn't invite him to her birthday party, so he asks Jane to help in an unusual way. Rafael finds himself in big trouble thanks to his half-brother. Meanwhile, Xo finds herself in a compromising position.

Jane has made big plans to celebrate Mateo’s first birthday, but things start to fall apart when she learns there might be an issue with her wedding venue. Rogelio faces a challenge on set that could jeopardize Jane’s big day. Jane is excited when Alba gives her a lead on a book publisher, but soon begins having doubts about her writing. Jane and Petra try to help Rafael figure out his troubles, but they have differing opinions on how to handle the situation. Meanwhile, Michael is convinced that Derek is really in cahoots with Mutter and has a plan to prove it.