Vicki expands her business and moves offices; Tamra reunites with an old friend; Shannon struggles with her weight and her marriage; Kelly worries her mother is becoming a hermit; Meghan returns after the birth of her baby, Aspen.
Shannon enlists a feng shui expert to help bring balance to her chaotic life; Lydia launches her magazine; Kelly struggles to make her marriage work; Meghan settles into life as a new mother; Lydia and Shannon meet for the first time.
Vicki struggles with trust issues as she sets up her new office; Peggy and her family deal with her upcoming surgery; Tamra resumes her role as the ''Rodney King'' of the OC; Shannon contends with her weight gain as well as her nemesis Kelly Dodd.
Shannon takes Sophie out for a driving lesson; Kelly seeks to improve her love life from the inside out; Lydia's mother throws a birthday party for her grandson; Tamra hopes to break the cycle of parental alienation and divorce in her family.
Tamra and Shannon come face to face; Lydia's family takes a vacation full of uncomfortable conversations; Vicki meddles in her son's love life; Peggy invites her friends to the unveiling of her Lamborghini.
Vicki gets green with envy when she learns that Kelly is planning on celebrating St. Patrick's Day with Shannon and Meghan. Peggy learns that something got lost in translation between her and Tamra. Lydia ponders if her son's prophecy will come true as she competes in a Spartan Race. Meghan hopes eyes will be a smilin' upon Shannon and Kelly as they engage in a heavy pour of whiskey and whimsy.
Kelly suspects her new pal Shannon of being up to her old tricks and confides in Meghan. Meghan puts her detective hat back on to investigate Vicki's issues with Shannon and Tamra. Vicki's looking to move forward with her new love, while Peggy takes her daughter to New York. The ladies attend a Drag Bingo event, where Lydia faces a moral dilemma and old arguments spark anew.