As her friends anxiously await the outcome of Maggie’s surgery, an unexpected arrival from her mother leads to a tense first meeting with Gary.

With questions still lingering around Jon’s death, his loved ones try to move on, each taking meaningful steps forward in their own lives. As most of them begin to accept that they may never get the explanation they desire, an unexpected member of the group decides to dig even further into the mystery behind Barbara Morgan.

When Delilah goes into labor, Eddie feels compelled to tell Katherine the truth about being the baby’s father. Meanwhile, Gary and Maggie struggle with living together post-cancer, and Rome and Regina continue to be at odds about having a baby of their own.

Eddie manages to keep Theo distracted in the midst of trying to track down Katherine, while Maggie realizes her mother’s surprise move to Boston might not be just for her. Meanwhile, Regina struggles with accepting Andrew’s ideas about the restaurant, and PJ makes a shocking confession to Rome.

On the verge of becoming a filmmaker, Rome takes a meeting with an old producer friend which causes him to feel torn about the creative changes he suggests for his script. Meanwhile, Gary steps in to help Danny prepare to audition for his school play, while Delilah craving some adult time agrees to go to dinner with Andrew.

Gary’s growing tension with Maggie comes to a head as she accidentally lets Colin out while she’s on the phone with Eric. Meanwhile, Delilah does a podcast about suicide, which helps her open up to Andrew.

The gang gathers for Theo’s 10th birthday, which is also a significant milestone for Eddie. Meanwhile, Delilah, Eddie and Katherine are at an impasse about revealing the truth about Charlie; Rome and Regina try to keep Sophie from getting too close to PJ, and Maggie helps Gary make a difficult decision about his dog, Colin.

A fellowship opportunity for Maggie forces Gary to reconsider his own future as the group must come together after a devastating loss.

Rome helps PJ through a personal crisis, while Gary and Maggie’s relationship takes a turn; and Delilah, Eddie and Katherine make tough decisions that will affect their families.