After the surprising reconciliation between Vicki, Tamra, and Shannon at last season's reunion, the ladies are working to rebuild their friendship and regain each other's trust. Tamra has moved into a new home, and as part of their divorces, both Shannon and Kelly have downsized, while also adjusting to life as single mothers. Vicki, who has marriage on the brain, is now cohabitating with her boyfriend Steve, though he is in no rush to pop the question. Tamra goes on a hike with her estranged friend Emily to try to clear the air, but at home is dealing with Eddie's health scare. With the help of her friends, Shannon finally takes of her wedding ring and Kelly brings the ladies together for a ropes course.

Kelly's argument with Vicki continues, coming to an angry, tearful end. Tamra and Vicki fly to Mexico for a girls weekend to help break Shannon out of her shell. While Tamra and Shannon embrace a wild night, Vicki tries to reign herself in at Andales, after promising Steve she won't do anything to embarrass him. But a night of dancing on the bars, ends with a real injury and the trio opening up about their real vulnerabilities. Back in OC, Kelly gets emotional support from her sage 11 year-old daughter, Jolie, while Emily and Gina bond over an exercise group, Stroller Strides.