It's "Dudes and Chicks Night in Hawthorne Heights. While the women introduce Molly to their wine hang, bar-hoppers Dave, Gabe and Jack run into Jack's "one who got away."

Jack's still caved out at big bro's house, Izzy's trying to coax the married couple back together, and after things go bad at work, Emma's not at all sure about what she really-really wants.

Good news, Izzy's not pregnant, so why's she housecleaning away her feelings again? Jack inches closer to the point of no return with Ruby. All the while, the clock's ticking on the daunting arrival of Emma's hyper-conservative parents.

Jack and Emma convince her parents that Izzy's their surrogate, but then the throuple's rouse unearths very real questions about babies and the long-term future of their relationship. Nina seeks out Andy's exes to set the record straight.

Izzy and Emma are stunned by Jack's proposal: What if the three of them really did have a baby together? But before they have time to delve deeper, they'll have to talk their way out of a tight spot with Emma's parents.

Jack wants a baby, Izzy wants a baby, everybody wants a baby... right? With the dazzling offer from Pinnacle pressing ever harder and an IVF consultation set, Emma must choose between a larger professional canvas and two true loves.

Izzy grows ever more suspicious of Emma's return to Portland and Jack's increasingly odd behavior. Just as they're edging their way into a surprising new relationship, Nina lashes out at Shaun. Emma makes the biggest decision of her life.

Nina's emerging feelings for Shaun are complicated when Andy pops back up with one hell of a story. Ben plants seeds of doubt about how Izzy could fit into the Trakarskys' new life.

The complex realities of polyamory and "throupling": What happens when this peculiar rom-com fades to black? Can they prove their best, truest, happiest lives really are together, even when it's difficult and more conventional alternatives beckon?

Izzy, Emma, and Jack finally take the polyamorous plunge together but things go wildly awry:Everything that could go wrong meets up to conspire against them... in their front yard. However,the real peril may be right there in the room with them.

Jack, Izzy, and Emma, all together for the first time, agree to keep their relationship a business arrangement. Emma has her first date with Izzy while Jack grows ever more jealous and concerned about how this might effect his possible promotion.

Coming together turned their lives upside down, but as much as Jack, Emma, and Izzy try to hide it, splitting up may be doing the real damage. Are all three brave enough to throw caution to the wind and pull off a dramatic last second save?

Izzy, Emma and Jack cope with the real world consequences of their burgeoning alt relationship.As the trio reunite to bolster their collective nerve and take a huge leap, Andy begins to put the pieces together about what Izzy's really been up to.

The awkward morning after dredges up old fears for Jack and Emma and wounded feelings for Izzy. With their three-way fling feeling like more trouble than it's worth, Jack and Emma wish they'd shut it down before the whole blackmail thing started...

With blackmail and hurt feelings accumulating all around them, Emma and Jack decide the only way to move forward with Izzy is to reinstate the business arrangement parameters. But Izzy has a plan of her own that's WAY more fun... until it isn't.

Suburban Portland couple Emma and Jack Trakarsky are totally in love but seriously lacking spice. They end up tangled up with an escort (grad student Izzy) to get the mojo back, setting into motion a life-changing series of events for the trio.

Jack and Emma start to wonder if they're on the same page. Izzy tries to find stability in Andy.After a startling development, Jack and Emma separately try to end things with Izzy, leading to a surprising epiphany.

As Jack, Emma, and Izzy try to put the mother of all weird days behind them, Emma reveals a secret, Izzy finds committing to safe-bet Andy tougher than she thought, and Jack can't shake the feeling that he's gotten them all in over their heads.

After their wild home date turns into a tearful breakup, Izzy decides she needs to move back home to Colorado to deal with her issues. Unaware, Jack and Emma continue to deal with the fallout of what's beginning to feel like a blur of bad choices.

With the happy throuple reunited, how can they explain Izzy's presence to Emma's old school parents? Nina gets disturbing news about Andy's romantic past. And the Amaris quest for cool leads them into a bizarre social situation.

Four months later, Emma’s still in Seattle, climbing her way to the top of the Pinnacle ladder alongside an old flame rekindled. Jack and Izzy settle into blissful monogamy in their newly finished loft. The upcoming divorce mediation and an uncomfortable reunion hangs over all of them. Carmen and new neighbor Hannah start a lifestyle magazine.

The day before the divorce signing, Jack and Emma are forced to spend an afternoon together divvying up their stuff. Someone very important from Izzy’s past shows up at precisely the wrong time. Dave and Carmen struggle to find a balance between their jobs and childcare. With Shaun’s help, Nina spins her vitriol towards Andy into an inventive thesis.

After signing the divorce papers, Emma returns to her new love in Seattle, but brings something from her old love Jack with her.

Emma remains torn between her new life and love in Seattle and her old live and love(s) back in Portland, but going back to talk to Jack about her situation causes sparks to fly.

Jack and Ben finally meet but Jack's got a more pressing issue on his mind. Emma tries to apologize to Izzy but it falls on deaf ears. Carmen and Hannah plan a magazine launch party. Izzy tries to reconnect Sasha with her grandmother.