Bonnie and Adam's relationship is tested when she allows him to move in for a few weeks. Also, Christy learns the hard way that it may be a mistake to try and meet men with Jill.
When Christy and Adam get into a car accident, Bonnie is hurt to discover she is neither of their emergency contacts. Wendie Malick returns as Adam's ex-wife, Danielle.
When Marjorie takes a break from the group, Bonnie becomes the go-to for everyone's problems, and Christy tries to overcome a painful memory from her past.
Christy and Jill take Emily to see her biological mother, Natasha, in rehab where they make a surprising discovery. Meanwhile, Bonnie watches Adam's dog while he's out of town.
On the fourth season finale, Christy tries to help when Bonnie gets into trouble with the IRS. Realizing she's in over her head, she encourages Bonnie so seek help from her newfound brother, Ray.
