Grace and Frankie meet Lisa Kudrow in season 4 trailer

“Do you two know how lucky you are to have each other?”

The question is posed to Grace and Frankie, unlikely friends played by Jane Fonda and Lily Tomlin brought together after their husbands announced their love for one another, by Sheree (Lisa Kudrow), Grace’s manicurist of 20 years, in the show’s official season 4 trailer. Kudrow joins the cast in a recurring role this season, as Sheree gets closer to Grace and threatens the peace of the series’ central friendship.

Of course, there’s plenty of other things going on as Grace and Frankie gears up for its return: Grace getting signed up for dating sites, Sal (Sam Waterston) and Robert (Martin Sheen) continuing to navigate the nuances of their relationship, and the ever-expanding vibrator business that Grace and Frankie started together. In addition to Kudrow, Peter Gallagher and Lorraine Toussaint are among the many intriguing guest stars to pop up in this trailer.

Grace and Frankie has been a steady, low-key success story for Netflix, and it continues to gain attention: Both Fonda and Tomlin are up for SAG Awards this year for best comedy actress.

Grace and Frankie returns to Netflix on Jan. 19. Watch the season 4 trailer above.