Season 4 starts in a very different place than it ends up — literally and figuratively. Frankie is living in Santa Fe with her boyfriend, Jacob, and Grace has a new roommate: Sheree. Sheree is a manicurist, but she helps Grace sell the vibrators that Grace created with Frankie. This kind of insertion into Grace’s day-to-day life ruffles Frankie’s feathers, but the three of them work it out without anyone getting too up in arms.
Frankie feels left out of Grace's new friendship with Sheree, her new lodger. Sol and Robert are arrested. Bud and Allison throw a gender-reveal party.
Frankie shares what she discovered about Sheree to a skeptical Grace. Bud sends everyone on a scavenger hunt. Frankie makes a big decision.
Grace and Frankie try to help Sheree get her house back... using both legal and illegal methods. Robert is nominated for a Tappy acting award.
Grace fears her relationship has reached its expiration date. Frankie faces an existential crisis when she learns she's been declared legally dead.
Grace and Frankie hold vibrator pop-up sales at a senior center and a college. Sol and Robert have a disagreement. Bud and Allison hit a roadblock.
Frankie reconnects with someone important from her past. Despite problems with her knee, Grace refuses to slow down. Robert tries to make amends.
Frankie and Sol have a blast devising a plan to get Frankie declared legally alive again. Grace faces some truths at a funeral she attends with robert.
Frankie convinces Allison to have a home birth. Grace and Frankie wind up stuck with a bickering Robert and Sol when there's a neighborhood lockdown.
Nick helps Grace while she's recovering from surgery. Jacob gets upset with Frankie because she wants to spend all their couple time with the baby.
Robert and Sol begin therapy. Grace and Frankie get a surprise when they bring gifts to a fan of their vibrators. Brianna's nemesis makes an offer.
Grace hires a contractor to fix an issue at the beach house. Sol's new friendship makes Robert uncomfortable. Frankie gets lost with the baby.
As Grace and Frankie deal with a major disaster in their home, they each keep secrets from other family members. Everyone attends Robert's play.