Molly Kagen is let go by her husband, a movie mogul. Now out of her elite social circle, Molly heads to the summer home of a friend.

Molly moves to Joan's beach house as she becomes closer to Sam.

Molly goes on date with Sam and later pretends to be Joan's sister to break her out of rehab. Meanwhile, Cricket catches her husband cheating and accepts Molly's invitation to move in.

Joan is injured in a drunk-driving accident. Sam is taken into custody and questioned after a witness claimed to have seen him attacking Lou. Molly tries to help him, but her story doesn't do much good.

Molly continues to be happy with Sam, but her other relationships are strained when she tries to get Joan to go sober. Meanwhile, as the divorce goes poorly, Sam begins to feel pressured by Molly to change.

Molly causes a fight with Joan after telling Pappy about her time in rehab. She then has to choose between Sam and Lou who both want a relationship with her. Meanwhile, the problems with the divorce force Molly to find the strength to take charge of her own life.

Molly hopes to revitalize her career by using material from her diary in a writing workshop. Elsewhere, Joan wrangles an abrasive ex-sex symbol with her job at a rehab facility. Also, Rodney develops a crush on a client, a macho action star.

Molly's journal is stolen during a party in Zach's house and the result can be a disaster. Rodney has a surprise about his new client.

Molly has been recognized as the Hollywood Ex-wife by a gossip blogger, causing her to hide at the Destinies. Elsewhere, Rodney explains his relationship with Felix to Molly, and Joan starts an affair.

Molly meets with a Hollywood agent, Eve's husband, and is thinking of adding a P.I. element to her book. Elsewhere, Devon has Liz feeling suspicious; Felix and Rodney get into a fight; and Joan juggles both her friendship with Robin and a relationship with David.

Just as Molly's relationship with Zach progresses, Lou shows up. Liz's jealousy makes Devon feel distracted. David is persuaded by Joan into appearing in David's movie.

Kenny's threats to derail Molly's movie has her going to surprising measures to protect it.

A secret uncovered about Zach's past fills Molly with misgivings. Elsewhere, Molly thinks Lou's fiancee is holding a secret, and a surprise decision is made by Felix.

Molly and Zack reevaluate their relationship after a confrontation with Molly's stalker.

With the police investigating Pappy's disappearance, Joan makes her return to Los Angeles.

The season finale finds Molly assessing her future with Zach through Lou's wedding ceremony. Elsewhere, Joan reveals a confession, Rodney's relationship changes, and Liz's life becomes turbulent.